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
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

P1 2

Using Energy

QuestionAnswer
What is the law of conservation of energy? Energy cannot be created or destroyed, only transferred.
What is useful energy? Useful energy is energy that is transferred to where it is wanted, in the form that it is wanted in.
What is the equation for efficiency? Efficiency = Useful energy/Total Energy Input x 100%
Name 4 ways that a machine can waste energy Friction creates heat, air resistance causes energy transfer to the surroundings, resistance of a wire causes heat, sound created by machinery.
Name 9 types of energy Electrical, Chemical, Sound, Heat, Nuclear, Gravitational Potential, Elastic Potential, Kinetic, Light
Created by: asdfghjkl;'#