Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Energy 1 pg 38- 39

Energy 1 pg 38

QuestionAnswer
Energy A quantity that is stored within objects. The units are Joules
Work Work is done when energy changes from one store to another
Dissapated Becomes spread out to the surroundings and becomes less useful forms of energy stores
Specific heat capacity The energy required to raise the temperature of 1kg of a substance by 1 degree c.
kinetic energy store The energy stored in objects are moving. It is increased when an object speeds up
Gravitational Potential Energy Store The energy stored in objects are raised off the ground
Chemical energy store energy stored in fuels like wood, methane gas or food
elastic potential energy store the energy stored in objects that are stretched of squashed
Nuclear Energy Store Energy stored in the nucleus of an atom
Thermal Energy Store Energy stored in an object due to its temperature. The higher the temperature the higher the energy store
Energy Transfer Pathways This is how energy transfers from store to store
Mechanical When energy is transferred from one store to another by a force
Electrical When energy is transferred from one store to another using an electrical current
Heating When energy is transferred from one store to another through heating
Waves When energy is transferred from one store to another through waves (i.e light or sound)
Law of conservations of energy Energy cannot be created or destroyed, only transferred from one store to another
Power The rate of energy transfer or the rate of work done. Power is measured in watts.
Efficiency The proportion of energy that is transferred usefully in a closed system. Efficiency is a decimal or a percentage.
Absorber An object that soaks up or absorbs energy
Emitter An object that radiates energy into the surroundings
Power measurement (W) Energy (J) divided by time (s)
What are the best emitters? Dull, black objects. They are called black bodies.
Efficiency formula Useful energy output divided by total energy output
Created by: Cabezablanca
Popular Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards