# data[].attributes.attachment_link.title
Southern California Earthquake Center | Studying earthquakes and their effects in California and beyond

# data[].attributes.attachment_link.description
Studying earthquakes and their effects in California and beyond

# data[].attributes.attachment_link.readable_text
Forces and Motion

General Announcements:

Forces and Motion Webquest- due Monday 12/15
Forces and Motion Quiz #2: Tuesday December 16th
- Newton's 1st law
- Inertia
- Cars lab
- Forces- balanced and unbalanced, Net force
Forces and Motion Quiz #1: Friday December 5th

- Definitions of motion and reference point

- Calculating speed (Speed = distance/time)

An object at rest will remain at rest, unless a force acts upon it, an object in motion will remain in motion, unless a force acts upon it - due to its inertia

A.K.A. Law of Inertia

A push or a pull; units = ; anything that causes an object to speed up, slow down, or change direction

1. If both forces are in opposite direction, add the two together to get Net Force.

2. If forces are in opposite directions, make the larger force "+" and the smaller one "-" and then add together.The object will be moved in the direction of the larger force

Force = Mass X Acceleration

1. If you increase Force, and keep Mass the same, Acceleration increases.

2. If you keep Force the same and increase Mass, Acceleration decreases.

As you increase the Mass of the objects, the force needed to move them increases.

If you reduce the friction with the addition of the pencils, the force needed decreases.

Links for Forces Webquest:
http://www.physicsclassroom.com/class/newtlaws/U2l2b.cfm#frict
http://www.bbc.co.uk/schools/scienceclips/ages/10_11/forces_action.shtml
http://www.physicsclassroom.com/class/newtlaws/u2l1d.cfm
http://science.discovery.com/interactives/literacy/newton/newton.html
http://www.learner.org/interactives/parkphysics/bumpcars.html

Additional Information for the Unit:

1st law: Inertia - An object in motion will remain in motion unless acted upon by an outside force, and an object at rest will remain at rest unless acted upon by an outside force.

Inertia is defined as: the tendency of objects to remain in motion or to stay at rest unless acted upon by an outside force.

2nd law: Force - a push or a pull that transfers mechanical energy to an object, sometimes causing a change in the motion of the object.

3rd law: For every action there is an equal and opposite reaction.

Speed and velocity are very similar, but are not the same.

Speed is defined as the distance that an object travels over a certain amount of time.

The formula for speed is:

Velocity is defined as the distance that an object travels over a certain amount of time AND in a specific direction

The formula for Velocity is:

As you can see velocity is different than speed in that it also requires a direction.

Therefore a change in direction, even though your speed may stay the same, will change your velocity.

# data[].attributes.attachment_link.title
8th grade Science: Unit 3- Forces and Motion

# data[].attributes.attachment_link.description
Forces and Motion Webquest- due Monday 12/15 Forces and Motion Quiz #2: Tuesday December 16th - Newton's 1st law - Inertia - Cars lab - Forces- balanced and unbalanced, Net force Forces and Motion Quiz #1: Friday December 5th - Definitions of motion and reference point - Calculating speed (Speed = distance/time) An object at rest will remain at rest, unless a force acts upon it, an object in motion will remain in motion, unless a force acts upon it - due to its inertia A.K.A.

# data[].attributes.headline
Mr. Burrell's 8th Grade Force & Motion Unit

# data[].attributes.subject
Mr. Burrell's 8th Grade Force & Motion Unit

# data[].attributes.attachment_link.description
10/4 & 7: 1) Which graph shows a faster moving object?

# data[].attributes.attachment_link.description
Force and Motion True or False? A force is necessary to keep object moving True or False? If an object is at rest, no forces are acting upon it Answer: False There are many forces acting on it (gravity, friction, air pressure, etc) but they are all BALANCED Answer: False Newton's First Law of Motion states: Objects in motion stay in motion in a straight line unless acted upon by an outside force.

# data[].attributes.attachment_link.description
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

# data[].attributes.headline
Brain Pop Science-Motions, Forces, & Time

# data[].attributes.subject
Brain Pop Science-Motions, Forces, & Time

# data[].attributes.body
Determine if paid subscription is needed

# data[].attributes.attachment_link.title
Science Unit: Motions, Forces, and Time - BrainPOP

# data[].attributes.attachment_link.description
What are the laws that rule the universe?

# data[].attributes.attachment_link.description
Home | Visual Physics | Homework Help | Basic Interactions | Video Physics Course | Video Electronics course | Resources for Teachers

# data[].attributes.headline
Oberon Middle School 8th Grade Force & Motion Unit

# data[].attributes.subject
Oberon Middle School 8th Grade Force & Motion Unit

# data[].attributes.attachment_link.title
Force and Motion - Oberon Middle School 8th Grade Science 1213

# data[].attributes.attachment_link.description
This unit will help the student understand why things move the way they do. Topics include: forces (balanced, unbalanced, and net), measuring motion (speed and acceleration), and Newton's laws of motion.

# data[].attributes.headline
8th Grade Science Teaching: Teaching Channel Org

# data[].attributes.subject
8th Grade Science Teaching: Teaching Channel Org

# data[].attributes.body
Free registration to use site

# data[].attributes.attachment_link.description
Easy to implement tips on teaching 8th grade science. Topics used for video include acceleration, force and Newton's Law, but all teaching techniques are applicable to all grades and lesson topics.

# data[].attributes.attachment_link.title
Speed and Motion - Mrs. Borgsmiller's 8th Grade Science

# data[].attributes.attachment_link.readable_text
A student doing an experiment in the rock physics lab.

A trench dug across a fault to learn about past earthquakes.

A GPS instrument measures slow movements of the ground.

A scientist stands in front of a fault scarp in southern California.

Damage to badly-constructed buildings after an earthquake.

Scientists doing field work and looking at their notes.

Children's Privacy Policy

# data[].attributes.attachment_link.description
USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards

# data[].attributes.attachment_link.readable_text
Thanks for visiting! Right now you're on PHYSICS4KIDS.COM. If you are looking for basic physics information, stay on this site. It's not just physics for kids, it's for everyone. We have information onmotion, heat and thermodynamics, electricity & magnetism, light, and modern physics topics. If you're still not sure what to click, try our site map that lists all of the topics on the site. If you surf and get lost in all of the information, use the search function on the side of the pages.

OKAY! Let's start here...

So you're asking, what isphysics? Everything in the universe has an effect on every other thing. Physicists study those effects. Physics is a science that relates to all other sciences: Chemistry, Biology, Geology, Astronomy, Meteorology, Engineering, etc. If you can name it, chances are physics is involved.

Everything on Earth, everything in our solar system, everything in our galaxy, and everything in the Universe moves and interacts, and forces play a big part in that. Physics studies thoseforces and interactions. Let's get started and look inside the physics of motion called classical mechanics. Go take a look!

That's it for the introduction. Now it is up to you to click and have fun! PHYSICS4KIDS is one of many free science sites developed by the team at the Kapili Islands. You may have also used Chem4Kids, Geography4Kids, Biology4Kids, or Cosmos4Kids. We also have a math activity site called NumberNut.com.

If you're not into graphics like home page image above, use the search tool (powered by Google) that will check our sites for the chemistry information you need. Type in a keyword or phrase and click the search button to get started.

# data[].attributes.attachment_link.description
Physics4Kids.com! The web site that teaches the basics of physics to everyone!