Save
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know (0)
Remaining cards (0)
Know (0)
0:00
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

Yr 8 Energy Revision

QuestionAnswer
What type of energy does a tennis ball have when you are holding it in your hand? Gravitational Potential Energy
What type of potential energy is found in food? Chemical potential energy
Can energy be created? No, it is converted from one form to another
When a torch is turned on is the energy transferred or transformed? Transformed
A toasted uses electrical energy to produce what type of energy? Heat
What are examples of renewable energy? Solar, wind, hydroelectric
True or false: Energy can disappear False
What is the law that relates to the transfer of energy? Law of conservation of energy
Can energy be passed on or wasted? Yes
A ball rolls down a slope. What type of energy is this? Kinetic
A candle is lit. What type of energy is produced? Heat, light
A phone is charged. What type of energy is this? electrical
Music is played through speakers. What type of energy is this? Sound
What is the formula for energy efficiency? Useful energy / total energy * 100 = Energy Efficiency
What does a Sankey diagram show? Useful and wasted energy
Energy that serves the purpose of the appliance is... Useful
Energy that is not intended for use by the appliance is... Wasted
Energy is stored in our bodies for later use. What type of energy is this? Chemical potential energy
How does the sun produce energy? Nuclear reactions
If an object does not have GPE where would I find it? On the ground
True or false: the sun is the source of energy for life on earth. True
What is potential energy? Stored energy
Would you call a lamp with an energy effciency of 20% efficient? No - 80% is wasted energy
A torch 80% energy efficient. What type of energy is the wasted energy? Heat
The energy starts in the sun. Travels to the Earth in 2 forms before being adsorbed by plants and converted again via photosynthesis. Name the 4 types of energy mentioned Heat, light, chemical, nuclear
What is the difference between transformed and transferred energy? The energy type changes in transformations
What material transfers heat energy most effectively? metals
Name 3 forms of potential energy. Gravitational, chemical, elastic, nuclear
Why is potential energy important? It stores energy so it can be released
Street lamp: Useful 25J, wasted Energy 75J. What is its energy efficiency? 25%
What is energy efficiency? How well an device changes energy to useful energy
What type of material is poor at allowing heat to move through it? Insulator
What unit of measurement is used to measure energy? Joules (J)
What type of energy does a skydiver have half way through his jump? Gravitational potential energy and kinetic
What type of energy is stored in a battery? Chemical
Created by: Sutt2019
 

 



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