# data[].attributes.body
Properties of light
*Light travels in a straight line
*Light travel in the speed of 300,000km/sec
*Reflection happens when light bounces off an object
*Refraction happens when light moves from an object to another object.

# data[].attributes.body
Translucent- Translucent objects does not let light pass through them they reflect it and form a dark region called shadow.

Transparent- Transparent objects does not let light pass through them insted they send the light into different ways light travels in a straight line. ex.(Glass)

Opaque- Opaque objects does not let light pass through them they reflect the light and form shadow. ex.(hands)

Properties of light
1.Light travels in a straight line.
2.Light travels in a speed of 300,000km per second.
3.Light waves usually travel in a straight lines called rays of light.
4.The light from the sun which is approximately 150 million Km away can reach the Earth in about eight minutes.

# data[].attributes.body
Properties of light: Light travels  300,000kms
per second.When Light travels from one medium to another medium it bends.When light Hits a smooth surface It bounces off together but when light hits a rough surface It bounces off in different directions this is called reflection.Light from the sun to earth takes about 8 minutes to reach.

# data[].attributes.body
Opaque objects do not let any light pass through.

# data[].attributes.headline
Transparent, translucent, opaque and Properties of Light-by Saina  Room 1

# data[].attributes.subject
Transparent, translucent, opaque and Properties of Light-by Saina  Room 1

# data[].attributes.body
Transparent
It lets the light pass through ex.glass

Translucent
Translucent materials let some light pass through. It scatters the light, so that you can't see through it. Ex. frosted glass

Opaque
opaque materials don't allow any light to pass through them.Ex. wood

Properties of Light

Light travels in a straight line.

It travels at a speed of 300,000km/s in air and is the fastest.

It gets reflected or is sent back when strike on an opaque object.

It gets refracted or bent when it passes from one medium to another.

# data[].attributes.body
Translucent objects let only an partial amount of light pass through. Eg. butter paper.

# data[].attributes.body
Properties of light

1.light travels in the speed of 300,000km/s  pre sec in air.
2.light travels in straight line called rays of light .
3.It is refracted or bent when traveling from one medium to another .
4.light reflects or bounces of when it strikes an opaque object .

Transparent , Translucent , Opaque

Transparent: Transparent objects let light pass through then  in a straight line. (ex: glass)

Translucent: Translucent objects let partial amount of light through them , so we can not see the light clearly. (Ex: frosted glass)

Opaque: opaque objects do not let any light pass through them. (Ex: wood )

# data[].attributes.body
Transparent:Transparent is when light passes through in straight line Ex .Glass,water,air
Translucent:Translucent is when only partial light passes through but that light does not come out in a straight line causing the other side to be fuzzy and unclear Ex Tissue paper,Frosted glass and plastic
Opaque:Opaque objects is when light gets completely blocked causing a shadow on where light cant reach Ex Wood,Stone,Metal etc

# data[].attributes.body
Transparent objects
Transparent  object let the light to pass through it. Eg are glass & air.

# data[].attributes.body
transparent=when light strikes an transparent object all the light pass through them.
translucent=when light strikes an translucent object only some light pass through them.
opaque=when light strikes an opaque object it does not let any light pass through them.
properties of light: thu
is this
1.light travels in a straight line
2.light travels 300000 km per second
3.reflection happens when light bounces off object
4.when light travels from one medium to another medium it tends to bend at the junction where the air and water meets is called refraction.

# data[].attributes.body
Properties of Light

1. Light travels in the straight line called rays of light.
2.The speed of light is 300,000 km/s per sec in air.
3.Light is reflects or bounces of when it strikes an opaque object.
4. It is refracted or bent when traveling from one medium to another.

Transparent, Translucent and Opaque

Transparent objects are objects that allow light to pass through them. eg: glass

Translucent objects are objects that allow only partial light to pass through them. eg: coloured glass

Opaque objects are objects that do not let light to pass through them. Shadows are formed due to the blocking of light by opaque objects. eg: wood

Luminous and Non-luminous objects

Luminous objects are objects that emit their own light. We see Luminous objects because their light enters our eyes directly.

Non luminous objects are objects that do not emit their own light. We see Non luminous objects because light from other light sources are reflected by them and enter our eyes.

# data[].attributes.headline
Room 1; Dhanya Senthil Kumar; Term 2; Review 6; GS; light and shadow; Transparent, translucent and opaque.

# data[].attributes.subject
Room 1; Dhanya Senthil Kumar; Term 2; Review 6; GS; light and shadow; Transparent, translucent and opaque.

# data[].attributes.body
1) When light shines on a transparent object,  all the light passes through. So, if you shine a light on an transparent object, all the light will go through and there will be no trace of a shadow. Since, glass is transparent, when you shine a light on it, there will be no trace of a shadow.

2)Translucent objects are foggy and hard for our eyes to process. some examples are: butter paper, frosted glass and much more.  When you shine a light on a translucent object, there will be a very faint shadow.

3) When light strikes an opaque object none of it passes through. Most of the light reflects off. when you shine a light on an opaque object you get a very dark shadow.

# data[].attributes.body
translucent,opaque and transparent objects
transparent objects light can pass through every single part of the object ex a transparent glass .

opaque =opaque objects do not let any light pass through them they make dark shadows ex a tree.

translucent= translucent objects light can pass through partially ex a butter paper.

# data[].attributes.body
Transparent-A transparent object is one which allows all light to pass through it. Since glass allows all the light to pass through it, so it is a transparent object.
Translucent-transmitting and diffusing light so that objects beyond cannot be seen clearly.Example:frosted glass.
Opaque-Plastic, wood, stone, ceramic are common examples of Opaque materials, and they are the most common type of material. In an Opaque material most of the light is not reflected by the surface, and instead scattered by the interior in a very small of light:

Properties of light:
Light travels in a straight line.
It travels at a speed of 300,000 Km/s in air and is the fastest.
It gets reflected or is sent back when strikes on an opaque object.
It is refracted or bent when it is travelling into one medium to another.

# data[].attributes.body
Tranparent

Transparent materials let light pass through

Translucent
Material let some tight pass through

Opaque

Materials do not let light pass through

Properties of light

Light travels in a straight line light waves 🌊

Light travels at a speed of 3000,000 km per s

The bending of light is called refraction

The reflection of light is called reflection

Prathvik. V

# data[].attributes.body
Properties of light
1.Light travels in a straight line
2.It travels in the speed of 3000,000Km per sec
3.Light gets reflected (sent back) when it strikes an object.
4.It gets refracted(bent) when it goes from one medium to another

# data[].attributes.body
Transperent objects  have no shadow because transperent objects are clear.

Translucent object have a Parshall shadow.

Opaque Materials do not let light pass through

# data[].attributes.body
Transparent objects - when light can pass though an object or material it is said to be a transparent object or material eg glass.

Translucent objects - when light partially pass though an object or material it is said to be a translucent object or material eg frosted glass.

Opaque objects - when light does not pass though an object or material it is said to be a opaque object or material eg a book.

# data[].attributes.headline
friction helps to walk, write and erase. it's a type of contact force

# data[].attributes.subject
friction helps to walk, write and erase. it's a type of contact force

# data[].attributes.body
yugan

# data[].attributes.body
Contact Forces Are Frictional force, Buoyant force, Muscular Force. Noncontact Forces are Magnetic force, Electrostatic Force Explanation: Gravitational Force Gravity is a important force. More the gravitational more the pull.

# data[].attributes.body
Contact force is when two substances are touching each other when the force is applied. The forces are frictional force, muscular force and bouyant force. Frictional force is when two surfaces rub each other. Frictional force is high when the surfaces are rough and less when the surfaces are smooth. Frictional force slows down a moving object

# data[].attributes.body
Non-contact forces are when two substances does not touch each other when the force is applied. The types of non-contact forces are gravitational force, magnetic force and electrostatic force.

(A)Magnetic force is when the force from the magnet pull
The iron substance around it. Magnet repels when there are like poles and they attract when there are unlike poles.

(B)If you throw a object up it comes back down because of the gravitational force.

(C)When a charged body attracts an uncharged body it is a electrostatic forced

# data[].attributes.body
Contact force : frictional force
Buoyant force
Muscular force

Non - contact :
magnetic force
electrostatic

Explanation non contact :
Non contact force always act in the same direction

# data[].attributes.body
1 MASCULARFORCE
2FRICTIONAL FORCE
3ELECTROSTATIC FORCE
4BAOUYANT FORCE
5MAGNATIC FORCE
6GRAVITATIONAL FORCE
7CONTACT AND NONCONTACT FORCE

# data[].attributes.body
Forces:

Contact forces:
Buoyant force
Muscular force
Frictional

Non-Contact forces:
Gravitational force
Electro-static force
Magnetic force

Explanation:
a) Gravitational force:
Gravity is an important force. Earth's gravitational force pulls the moon to its orbit. In planets with lesser gravitational force, We will be able to levitate. More the gravitational force, more the pull.

# data[].attributes.body
Contact force:
1. buoyant force
2.muscular force
3.frictional force

Non-contact force:
1.electrostatic force
2.gravitional force
3.magnetic force

frictional force is when to surfaces rub each other

# data[].attributes.body
contact force-muscular force, frictional force,  bouyant force
muscular force-muscular force is the force that is used by our muscles to hold an object or push it.

non contact force-magnetic force, gravitational force, electrostatic force.
magnetic force-magnetic force is a force used by magnet to attract the objects that are made of metal etc.

# data[].attributes.body
type of force is contact force and non contact
contact
buoyant force
muscular force
frictional force

non contact
gravitational force
magnetic force
electrostatic force

# data[].attributes.body
Types of Forces:
Buoyant Force
Magnetic Force
Muscular Force
Electrostatic Force
Frictional Force
Gravitational Force

Buoyant Force is the force which pushes an object upwards in the water

Magnetic Force is a electromagnetic force.
Opposite poles attract and same poles repel.

Muscular Force is the force in our muscles which we use to push or pull something

Electrostatic Force is a force which attracts when a object is being charged.

Frictional Force is a force which comes in the opposite side of motion.

Gravitational Force is responsible for pulling the objects to the ground.

# data[].attributes.body
We learnt about the types of force:
Contact force and Non-Contact force.

Contact Force:
Buoyant Force
Muscular Force
Frictional Force

Non- Contact Force:
Gravitational Force
Magnetic Force
Electrostatic Force

Our Points:
Contact Force is when 2 bodies are in contact with each other.
Non-Contact Force is when 2 bodies are NOT in contact with each other

# data[].attributes.body
types of forces

contact and non contact force

contact forces

1. boyant force
2. muscluar  force
3.frictional  force

non-contact  forces

1.electrostatic force
2.magnitic force
3.gravitational force

# data[].attributes.body
1. Learnt we about the types of force which are contact and non contact force.
2.We learnt how to measure force.
3. We learnt about balanced and unbalanced force
4. Contact force is when to things come in contact with each other
5. Gravitational force- Example apples falling from a tree. Gravity makes the apples fall
6. Force is a push or a pull
7. We also did a recap on work and energy

# data[].attributes.headline
We learnt about the types of force-Chelli

# data[].attributes.subject
We learnt about the types of force-Chelli

# data[].attributes.body
The types of force are
muscular force
buoyant force
electrostatic force
magnetic force
gravitational force

# data[].attributes.body
The types are:
Contact force
Non Contact force

Contact force types are:
Muscular Force
Friction Force
Buoyant Force

Non Contact force are:
Gravitational force
Magnetic Force
Electrostatic force

Frictional Force: Friction is a resistance. It is applied  when 2 objects rub aginist each other

ex: Walking: Fricton between legs and floor
Driving: Friction between road and tyres of cars

# data[].attributes.body
We learnt about 2 types of forces they are contact and non contact force

Types of contact force are:
Muscular force
Buoyant force
Frictional force

Types of non contact force:
Electrostatic force
Magnetic force
Gravitational force

Frictional force is when 2 surfaces rub against each other.

Magnetic force -
Will only attract when opposite poles are placed together.
And it would repel if the same poles are placed together.

# data[].attributes.headline
Non contact force if two surfaces are in contact with each other

# data[].attributes.subject
Non contact force if two surfaces are in contact with each other

# data[].attributes.body
Contact force means the force makes contact with the object while acting on it

# data[].attributes.body
friction - contract - friction is there in our daily life because walking friction between feet and the floor

# data[].attributes.body
non contract force if two surface are not contract with each other.

# data[].attributes.body
contract force means if two things have contract with each other.

# data[].attributes.headline
Lesson 5: Force-Shivani                                            

# data[].attributes.subject
Lesson 5: Force-Shivani                                            

# data[].attributes.body
Force is a push or a pull

Contact forces
1 Buoyant force
2 Muscular force
3 Frictional force

Non-Contact force
1 Magnetic force
2 Electrostatic force
3 Gravitational force

Frictional force
Friction is produced when two surfaces rub against each other.
Examples of Friction in our daily lives;
1 Friction is produced when we walk
[ Friction between your feet and the road]
2 Friction is produced when you are driving a car
[ Friction between the road and the wheels of your car]

# data[].attributes.body
A. Types of Forces:

a.Contact and Non-Contact Force

Contact Force -
1.Frictional Force.
2.Bouyant Force.
3.Muscular Force.

b.Non-Contact Force
1.Gravatational Force.
2.Magnetic Force.
3.Electrostatic Force.

B. Explain about 1 Force

a. Frictional Force

1.  Friction is caused when two surfaces rub with each other.
2. Frictional force slows objects down.

b. Magnetic Force

1. Magnetic force is the attracts that pulls 2 magnets together.

Thank you Mam

# data[].attributes.body
magnetic force-non contract-in magnetic force if the north pole and north pole or south pole and south pole will repel. North pole and south pole will actract

# data[].attributes.body
Types of Force

Contact Forces and Non-Contact Forces

Contact Force:
1. Up thrust Force
2. Muscular Force
3. Frictional Force

Non-Contact Forces:
1. Gravitational Force
2. Electrostatic Force
3. Magnetic Force

Points:
Frictional Force-Frictional Force is the force which keeps us steady. Without Friction Everything will slip. Friction is also Important to our life.

# data[].attributes.body
Contact force- Bouyant force, Muscular force , Frictional force

Non-Contact force- Gravitational force, Magnetic force, Electrostatic force

Frictional force- Frictional force is when two things rub against each other. Eg: when we walk, friction helps you walk properly and does not let you walk forever or let you slip.

# data[].attributes.headline
magnetic force  magnetic force is the attraction  and repulsion   between 2 magnets

# data[].attributes.subject
magnetic force  magnetic force is the attraction  and repulsion   between 2 magnets

# data[].attributes.body
Tejas

contact force
buoyant force
frictional force
muscular force

non-contact force
gravitational force
magnetic force
electrostatic force

# data[].attributes.body
contact force          non contact force

1. frictional force     1.magnetic force
2. buoyant force  2. gravitational force
3. muscular force 3.electrostatic force
* we learnt that magnetic force attracts in opposite poles

# data[].attributes.body
Magnetic force - Magnetic force is the attraction or repulsion that arises between two magnets.

# data[].attributes.body
Types of Forces

Contact force & Non contact Force

Contact Force -
1. Buoyant Force
2. Frictional Force
3. Muscular Force

Non - Contact Force -
1. Gravitational Force
2. Magnetic Force
3. Electrostatic Force

Points :

Contact -
Frictional Force - When two surfaces rub against each other friction occurs.

# data[].attributes.body
contatct force :
1. frictional force
2. muscular force
3.bouyant force

non-contact force
1. magnetic force
2. gravitational force
3. electrostatic force
friction - friction is less on wet floor

# data[].attributes.body
1. We learnt about gravitational force.
2. We learnt about muscular force
3. We learnt about magnetic force
4. We learnt about buoyant force
5. We learnt about electrostatic force
6. We learnt about friction force

# data[].attributes.body
WE LEARNT
GRAVITATIONAL FORCE
FRICTIONAL FORCE
MUSCULAR FORCE
BOUYANT FORCE
MAGNETIC FORCE
ELECTROSTATIC FORCE

MUSCULAR FORCE- IT MEANS WHEN YOU PUT  A FORCE USING YOU MUSULES THAT IS CALLED A MUSCULAR FOCE
FOR EX: PUSHING A CAR

# data[].attributes.body
Contact force-Buoyant force-An upward force exerted by a fluid on a body which is fully or partly immersed in it is called Buoyant force.

# data[].attributes.body
1) we learnt about contact and non - contact force
2)  we learnt about balanced and unbalanced force
3) we learnt about muscular force and frictional force
4) A force is a push a pu
5) There are 6 Forces
6) There are 3 contact force and 3 non-contact force
7) without friction we cannot walk or run

# data[].attributes.body
1. We learnt the types of forces.
2. Buoyant force, muscular force, friction are contact forces.
3. Magnetic force, gravitational force are some of non contact force

# data[].attributes.body
1.We learnt about non-contact and contact force.
2.We learnt about types of force.
3.The unit in which the force is measured is Newton.
4.We learnt about types of energy.
5.We learnt about balanced and unbalanced force.
6.Their are 3 contact and 3 non-contact force.

~Tanay Dhyani~

# data[].attributes.body
Have you ever wondered why you don’t slide easily across the cement in your shoes and smoothly slide on a wooden floor even in socks? The answer is friction. It is a powerful force that acts between two things in contact and controls the movement of the object.

1. Friction Is Both Harmful And Helpful

# data[].attributes.body
We learnt about what is force(a push or a pull)how to measure the force(newton)contact force(when two surfaces get in contact with each other)noncontact force(when two surfaces get in contact with each other)

# data[].attributes.body
points for Force⬇️:

1. there are LOTS of types of forces but the main two groups are: contact and non-contact.
2. the three types of contact forces are: Muscular, Frictional and buoyant force.

3. the three non-contact forces are Gravitational, magnetic and Electrostatic.

4.  muscular force is the force when we we use our energy like opening a door or pushing a box.

5.frictional force is a force when on a rough surface this force slows us down.

6. Gravitational force is responsible for bringing the items we toss into the air back to earth. When an object is resting on a surface it is exerting a downward force equal to its weight and this downward force is known as Gravitational force.

These are my points.
Thank you.

# data[].attributes.body
We learned about non contact force and contact force  non contact force is when two objects do not come in contact with each other.
Contact force is when  two objects come in contact with each other then we learned about balenced and  unbalenced  force.
Balenced force is when two forces of equal magnetude in opposit directions  is called ballenced force unbalenced force is the opposit of  the balenced force

# data[].attributes.body
we learnt about push pull, contact force, non-contact force, balanced force, unbalence force,friction can be both good and bad.

# data[].attributes.body
The types of forces are
1.Contact force
2 Non-contact force
the types of Contact forces are
1.Frictional force
2.Buoyant force
3.Muscular force
The types of Non-contact forces are
1.Gravitational force
2.Magnetic force
3.Electrostatic force

# data[].attributes.body
The types of forces are non contact and contact forces.

The types of contact forces are muscular force ,frictional force and buoyant force.

Muscular force- muscular force is the force that is applied from our body parts like arms and legs.

Frictional force- friction is produced when two surfaces rub against each other and cause a moving object to slow down.

Buoyant force- Buoyant force is an upward force exerted by a fluid on a body which is fully or partially immersed in it.

Non contact forces are gravitational force,magnetic force and electrostatic force.

Gravitational force- every object in the universe attracts every other object. This is called gravitational force.

Magnetic force- magnetic force is the attraction or repulsion that arises between two magnets.

Electrostatic force- electrostatic force is the force exerted by a charged body on another charged or uncharged body.

# data[].attributes.body
types of force non contact force and contact force.
friction is a force that when two surfaces rub against each other,it makes the object move faster and slower.

bouyant force is a upward force that is exerted by a fluid on a body which is fully or partially immersed .

these are some examples of contact and non contact force.

# data[].attributes.body
points about force
1 gravitational force- gravitational force is exerted by the ground

# data[].attributes.body
Force is a push or a pull.
Frictional force is when two surfaces rub against each other.

# data[].attributes.body
We learnt about force and its types.
Types of force are:
Contact force
Non-Contact force.

Contact force
Types of contact force are:
Muscular force
Frictional force
Buoyant force

Non-contact force
Types of Non-contact force are:
Gravitational force
Magnetic force
Electrostatic force

# data[].attributes.body
Today we recalled about friction and the effects of force and also we learnt about what is force and contact force and Non- contact force and also electrostatic force, Gravitational force, Buoyant force, Magnetic force, Muscular force, Frictional force. we also learnt Push and pull

# data[].attributes.body
Types of force are -
1. Contact force
2. Non-contact force
Example of contact force are -
Muscular force, frictional force and buoyant force.
Example of non-contact force are -
Gravitational force, magnetic force and electrostatic force

# data[].attributes.headline
muscular force is exerted by an object or fluid -Aarush

# data[].attributes.subject
muscular force is exerted by an object or fluid -Aarush

# data[].attributes.body
Gravitational force is the force that makes everthing in the universe fall down

force is a push or a pull

# data[].attributes.body
we learnt about bouyant force,frictional force,magnetic force,muscular force,
eletro stactic force and more. the two types
of force are contact and non contact force

# data[].attributes.body
Points about force
1. Gravitational force- Gravitational force is exerted by the ground.

# data[].attributes.body
The two types of forces are Contact force and Non contact force.

Non contact force - It results from the 2 interaction objects that are not in contact with each other. The types of non contact force are magnetic force, electric force, gravitational force. by yashika

# data[].attributes.body
We learnd about the types of energy and disscused it. we allso recaped about non contact force and contact force we did a little bit of revition

# data[].attributes.body
1. Force is measured in Newtons.
2. The types of Contact forces are Muscular force, Buoyant force and Frictional force. 3.Buoyant force is an upward force exerted by a liquid on a body which is fully or partially immersed in water.
4. Electrostatic force is a Non-Contact force is force exerted by a charged or uncharged body.

# data[].attributes.body
The types of forces are
1. Contact force
a. Muscular force - a force which is powered by human's muscles
b. Frictional force - a force which is created when two things rub against each other
c. Buoyant force - a force which creates by an upward force

# data[].attributes.body
Contact and Non contact are the 2 types of forces
Muscular force
Magnetic force
Electrostatic force
Buoyant force
Frictional force-when two surfaces rub against each other
Gravitational force

# data[].attributes.body
boyent force elctrostatic force musculer force up and down magnetic force Boyent force if somthing has a lower denceity it will float water has a low denceity so if anything that has a lower decity than watr it will float

# data[].attributes.body
1. NON contact force , contact force, muscular force , Gravitational force frictional force , Buoyant force , electrostatic force and agnetic force are the types of force.

contact
frictional force , Buoyant force , muscular force

non contact
Gravitational force electrostatic force and magnetic force

# data[].attributes.body
I learnt about bouyant force and frictional force, eletro stactic force and many more. The two types of forces are contact force and non-contact forces

# data[].attributes.body
we learnt what forces is [pull push] and what is it measured in [n]

# data[].attributes.body
We learnt about what is force(a push or a pull)how to measure the force(newton)contact force(when two surfaces get in contact with each other)noncontact force(when two surfaces get in contact with each other)

# data[].attributes.body
1. We Learnt how to measure Force.
2. The types of Forces are Contact force and Non - Contact Force.
3. Buoyant Force - An upward force exerted by a fluid on a body.
4.  A force exerted by a charged body on another charged or uncharged body is known as Electrostatic Force.
5. Magnetic Force - Magnetic Force is the attraction or repulsion of magnets.
6. Muscular Force - A force exerted using hands and legs.
7. Frictional Force -  A force exerted when two surfaces rub against each other.

# data[].attributes.body
1. The buoyant force is the upward force exerted on an object wholly or partly immersed in a fluid.

2. The electrostatic force is an attractive and repulsive force between particles are caused due to their electric charges.

3. Gravitational force is responsible for bringing the items we toss into the air back to earth. When an object is resting on a surface it is exerting a downward force equal to its weight and this downward force is known as Gravitational force.

4. Magnetic force is a consequence of electromagnetic force and is caused due to the motion of charges.

5. A force exerted using hands and legs.

6. A force exerted when two surfaces rub against each other.

7. We Learnt how to measure Force.

8. The types of Forces are Contact force and Non - Contact Force.

# data[].attributes.headline
R.M.Akshitaa - Contact and Non Contact Force

# data[].attributes.subject
R.M.Akshitaa - Contact and Non Contact Force

# data[].attributes.body
Contact
Buoyant Force - An upward force exerted by a fluid on a body.

Muscular Force - A force exerted using hands and legs.

Frictional Force -  A force exerted when two surfaces rub against each other.

Non Contact
Magnetic Force - Magnetic Force is the attraction or repulsion of magnets.

Gravitational Force - A force that pulls everything down.

Electrostatic Force - A force exerted by a charged body on another charged or uncharged body is known as Electrostatic Force.