Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


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
remaining cards
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:
restart all cards
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

7Sci CH1

7th Science CH1 Forces and Pressure

Action force The force you exert when you push on something every action force as an equal and opposite reaction force that occurs at exactly the same time.
Balanced force Forces whose actions cancel each other out
Buoyant force Upward force exerted by water equal to the weight of water the object is displacing;
Force A push or pull,more force is needed to move a large object than a small object, force equals mass times acceleration
Inertia Tendency of an object to resist changes in motion; objects with large mass have greater inertia and resist acceleration; as the object’s inertia increases, the force needed to accelerate that object also increases
Newton Standard unit of force, abbreviated N; 1 newton of force equals the amount of force needed to accelerate a 1-kg mass at 1 m/s2
Pressure The force or weight acting on each unit of area; calculated by dividing the weight of an object by the surface area the object occupies
Reaction force The force that pushes back on you when you push on something, action-reaction forces occur in pairs, exert equal and opposite forces and happen at exactly the same moment
Weight The force by which an object is pulled by Earth’s gravitational force, calculated by multiplying acceleration due to gravity times the object’s mass