Follow up questions

1 . Contact or Non-Contact Force: Forces that act between two objects that are physically touching each other.

2 . Contact or Non-Contact Force: Forces that act between two objects that are not physically touching each other.

3 . Contact or Non-Contact Force: Gravitational forces

4 . Contact or Non-Contact Force: Magnetic forces

5 . Contact or Non-Contact Force: Air Resistance

6 . Contact or Non-Contact Force: Frictional forces

7 . Contact or Non-Contact Force: Electrostatic forces

8 . What are all forces measured in?

9 . Also known as a spring balance, which instrument can be used to measure forces?

Questions

1. True or False: When an object moves through the air it will collide with air particles and speed up

2. State the name of the force that causes objects moving through air to slow down.

3. True or False: When an object moves through the air it will collide with air particles and slow down

4. State the name of the shape of objects that have been designed to reduce the effects of drag.

5. State the name of the force that exists between your foot and the ground, which allows you to move.

6. True or False: A moving object slows down due to the frictional forces

7. True or False: Friction will cause an object to eventually stop.

8. State the name of the force that causes objects moving through water to slow down.

9. State the name of the substance that reduces friction between two surfaces

10. State the name of the force that causes object moving through water or air to slow down.

 

 and acting in the  ____________ direction.

 

 They are said to be in ______________.

When forces on an object are balanced there is __________________ in speed or direction. 

An object __________ be moving whilst experiencing balanced forces.

 

Forces are unbalanced when they are ___________sizes.

1 . If a car is moving and the resultant force is 0 N, the car is moving at a _______ speed.

2 . If a car is moving and there is a resultant force acting on the car in a forwards direction, the car will ____________.

3 . Calculate the resultant force: The forwards driving force of the car is 2000 N and the oppositional frictional forces acting on the car are 1000 N.

4 . Calculate the resultant force: The forwards driving force of the car is 3000 N and the oppositional frictional forces acting on the car are 1000 N.

5 . Calculate the resultant force: The forwards driving force of the car is 2000 N and the oppositional frictional forces acting on the car are 2000 N.

2. How many metres does an object moving at 8 m/s for 40 s travel?
distance = speed x time
                = _________x __________
                = _________m

3. What is the speed (in m/s) of an object that travelled 600 m in 6 s?
Speed = distance ÷ time
             = _________m ÷  ________s 
             = __________ m/s

4. distance ÷ speed = _____________

5. Calculate the speed of the object between 0 m and 100 m when the object takes 3 s to travel from start to finish.
Speed = distance ÷ time
             = _________ ÷  ________
             = __________ m/s

7. How many metres does an object moving at 5 m/s for 20 s travel?
distance = speed x time
                = __________x __________
                = ____________m

8. distance ÷ time = ____________

Follow up questions

1 . Contact: Forces that act between two objects that are physically touching each other.

2 . Non-Contact Force: Forces that act between two objects that are not physically touching each other.

3. Non-Contact Force: Gravitational forces

4. Non-Contact Force: Magnetic forces

5. Contact: Air Resistance

6 . Contact: Frictional forces

7 . Non-Contact Force: Electrostatic forces

8 . What are all forces measured in? Newtons

9 . Also known as a spring balance, which instrument can be used to measure forces? Newton-meter

Questions
1. False: When an object moves through the air it will collide with air particles and speed up

2. State the name of the force that causes objects moving through air to slow down. air resistance

3. True: When an object moves through the air it will collide with air particles and slow down

4. State the name of the shape of objects that have been designed to reduce the effects of drag. streamlined

5. State the name of the force that exists between your foot and the ground, which allows you to move. friction

6. True: A moving object slows down due to the frictional forces

7. True: Friction will cause an object to eventually stop.

8. State the name of the force that causes objects moving through water to slow down. water resistance

9. State the name of the substance that reduces friction between two surfaces. Lubrication

10. State the name of the force that causes object moving through water or air to slow down. Drag

2 . If a car is moving and there is a resultant force acting on the car in a forward direction, the car will speed up/accelerate.

3 . Calculate the resultant force: The forwards driving force of the car is 2000 N and the oppositional frictional forces acting on the car are 1000 N. Resultant force = 2000-1000 = 1000 N

4 . Calculate the resultant force: The forwards driving force of the car is 3000 N and the oppositional frictional forces acting on the car are 1000 N. Resultant force = 3000-1000 = 2000 N

5 . Calculate the resultant force: The forwards driving force of the car is 2000 N and the oppositional frictional forces acting on the car are 2000 N. Resultant force = 2000-2000 = 0 N

1. Pluck a shorter harp string

2. Hit a drum softer

3. Use a mute in a trombone

4. Tighten a drum skin

5. Loosen a guitar string

6. Blow a trumpet harder

Copy and complete the sentences on echoes and ultrasound by matching the halves.

 1. Echolocation can be used to...
 2. Soft materials can be used to...
 3. Ultrasound is...
 4. Dolphins and whales use ultrasound to... 
 5. Echoes are...
 6. A medical use of ultrasound is... 

Choose from the following:

Task 2B
1. Pluck a shorter harp string - changes pitch

2. Hit a drum softer - changes loudness

3. Use a mute in a trombone - changes loudness

4. Tighten a drum skin - changes pitch

5. Loosen a guitar string - changes pitch

6. Blow a trumpet harder - changes loudness

1. Echolocation can be used to...

 2. Soft materials can be used to...

 3. Ultrasound is...

 4. Dolphins and whales use ultrasound to... 

 5. Echoes are...

 6. A medical use of ultrasound is... 

5. Plotting graphs and drawing tables 

2. Away or Towards: Will light bend away or towards the normal when light enters a more optically dense material?

3. What is the region between one material and another material called?

4. What is the angle between the refracted ray and the normal called?

5. True or False: The incident ray is the ray that exits the boundary into a different material.

2. How many metres does an object moving at 8 m/s for 40 s travel?
distance = speed x time
                = 8 x 40
                = 320m

3. What is the speed (in m/s) of an object that travelled 600 m in 6 s?
Speed = distance ÷ time
             = 600m ÷  6s 
             =100 m/s

4. distance ÷ speed = time

5. Calculate the speed of the object between 0 m and 100 m when the object takes 3 s to travel from start to finish.
Speed = distance ÷ time
             = 100 m ÷  3 s 
             = 33.3 m/s

7. How many metres does an object moving at 5 m/s for 20 s travel?
distance = speed x time
                = 5 x 20
                = 100m

8. distance ÷ time = speed

2 . Which part of the ear is a thin membrane? Eardrum

3 . Which part of the ear converts vibrations into nerve impulses? cochlea

4 . Which part of the ear takes the electrical impulses to the brain? auditory nerve

5 . In which part of the ear are vibrations happening in a gas? ear canal

6 . In which part of the ear are vibrations happening in a liquid? cochlea

7 . After the outer part of the ear and before the tiny ear bones, vibrations are happening in a solid - what part of the ear is it? eardrum

8 . After the eardrum and before the cochlea, vibrations are happening in a solid - what part of the ear is it? ossicles

9 . What are sound waves converted into inside the cochlea? electrical impulses

10 . What is sound intensity measured in? decibels

11 . What is the symbol of decibels? dB

12 . How many times does an increase of 10dB increase the sound intensity? 10 times louder

Sound waves enter the ear, travel through the ear __________ and cause the ear__________ to vibrate. These vibrations travel through the inner ear to the auditory ____________, where _____________ impulses are sent to the brain.

2 . Which part of the ear is a thin membrane?

3 . Which part of the ear converts vibrations into nerve impulses?

4 . Which part of the ear takes the electrical impulses to the brain?

5 . In which part of the ear are vibrations happening in a gas?

6 . In which part of the ear are vibrations happening in a liquid?

7 . After the outer part of the ear and before the tiny ear bones, vibrations are happening in a solid - what part of the ear is it?

8 . After the eardrum and before the cochlea, vibrations are happening in a solid - what part of the ear is it?

9 . What are sound waves converted into inside the cochlea?

10 . What is sound intensity measured in?

11 . What is the symbol of decibels?

12 . How many times does an increase of 10dB increase the sound intensity?

Optional extension task:
Design 2 different rooms. For each, consider the materials and structure of the walls

Room 1: A concert hall

Room 2: A recording studio

High Challenge: for each, explain the choice of material for the walls

Optional extension task: show this to your teacher to get a Poly Point
Design 2 different rooms. For each, consider the materials and structure of the walls

Room 1: A concert hall

Room 2: A recording studio

High Challenge: for each, explain the choice of material for the walls

 

and acting in the opposite direction.

They are said to be in equilibrium (equal).

When forces on an object are balanced there is no change in speed or direction. 

An object can be moving whilst experiencing balanced forces.

 

Forces are unbalanced when they are different sizes.

Unbalanced forces changethe speed or direction of an object.



Keypoints - What you need to know

 

Tips: 

Why is the elastic behaviour used?

How is it controlled?

How are problems avoided?

Write a short paragraph explaining how these 'mosquito' alarms would work.

In particular, try to compare the effect the 'mosquito' alarms will have on teens and on adults.

Source:
https://www.civilrightsmovement.co.uk/mosquito-alarm-infringement-human-rights.html

Hint: Think about the arrangement of particles in these three states.

Use diagrams and text to explain your ideas.

Use your research to produce a leaflet for concert organisers to give to the public.

In this activity you will use your research skills to find out:

Sources:
What is sound? 

This website describes how sound is produced, what sound waves are, and how the ear works. Choose the ‘What is Sound’ option.

This site describes how different musical instruments produce vibrations which produce sounds. 

www.method-behind-the-music.com/mechanics/instruments  

This website describes the structure of the ear and how we hear. 

These sites explain how loud noises affect hearing, how to compare loudness, and some ways to prevent hearing damage.

Choose the Recording Studio option to find out what happens when music is recorded.  

Answer the questions:
1. What is the angle of incidence if the angle of reflection equals 44°?

2. What is the angle of incidence if the angle of reflection equals 60°?

3. What is the angle of reflection if the angle of incidence equals 45°?

2. Calculate Aidan's speed at A.
Speed = distance ÷ time
             = ___2m______ ÷  __20s______
             = ___0.1_______ m/s     

3. At B, Aidan stopped at a traffic light between 20 to 30 seconds. How long did he stop? _____10_______ seconds.

4. At D, Aidan stopped again between 35-45 seconds. How long did he stop? _____10________ seconds.

2. Calculate Aidan's speed at A.
Speed = distance ÷ time
             = _________ ÷  ________
             = __________ m/s     

3. At B, Aidan stopped at a traffic light between 20 to 30 seconds. How long did he stop? ____________ seconds.

4. At D, Aidan stopped again between 35-45 seconds. How long did he stop? _____________ seconds.