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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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.

Remove ads
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

Activity 7-8 Words

McKinney - Science

Fossil Fuels Fuels formed in the ground from the remains of dead plants and animals. It takes millions of years to form fossil fuels. Oil, natural gas, and coal are fossil fuels.
Generator A machine that converts mechanical energy into electrical energy. Electricity is produced from magnets whirling inside coils of wire in the generator core.
Non-Renewable Resources a resource which cannot be replaced once it is used up, for example fossil fuels (oil, natural gas and coal).
Photovoltaics collects light energy from the sun and converts it into electrical current
Radioactive Capable of emitting high-energy rays or particles
Renewable A resource that can be replenished at a rate equal to or greater than its rate of depletion; ie, solar, wind, geothermal and biomass resources
Turbine A machine for generating rotary mechanical power from the energy of a stream of fluid (such as water, steam, or hot gas). Turbines convert the kinetic energy of fluids to mechanical energy through the principles of impulse and reaction, or a mixture of th
Energy Efficiency Reducing energy or demand requirements without reducing the end-use benefits.
Created by: mckinneyr