Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Forces Level 1

All the terms you need to know for Level 1 of the Forces Menu

QuestionAnswer
force a push or a pull
magnetism a force that can attract (pull towards) or repel (push away) that exists with many metal objects
buoyancy an upward force exerted by a liquid or gas. it helps boats float.
gravity an attractive force between ALL objects in the universe. it changes depending on distance and mass of the objects. (larger = stronger, farther away = weaker)
mass the amount of matter (or stuff, or atoms) in an object. it is constant even if gravity changes.
weight a measurement of how much gravity pulls on a certain amount of mass. it changes depending on gravity.
friction a force between objects that touch, which opposes (goes against) motion. it also generates heat. it can be reduced with wax or oil or grease.
spring balance (spring scale) a scientific device for measuring force.
Newtons the units for measuring force.
attract when objects pull toward each other.
repel when objects push away from each other
electricity a force caused by moving electrons (current) or by build-up of charges (static electricity).
atomic force the force that holds atoms (all matter) together, and also holds protons and neutrons and electrons together within atoms.
elasticity a force that pulls springy objects back to their original shape after you let them go.
balanced forces these are equal AND opposite (direction) forces, where there is no change in motion (no acceleration, speed stays same or no movement at all)
unbalanced forces forces are unequal, or the direction of the forces is not opposite. the motion will change (speed up or slow down or start moving or stop moving).
Created by: rhk9