env science unit 4 vocab

21 flashcards · Other · by Alexander Lagrant

1. Energy

   Ability to do work/create change (change = work)

2. Joules

   Unit of measurement for Energy

3. Work

   Force times distance, The change that results from energy

4. Power

   Work over time

5. Watts

   Joules per second

6. Efficiency

   Output over Input

7. Output

   The amount of energy created (measured in watt hours)

8. Input

   The amount of fuel put into a reaction that creates energy

9. Fossil Fuel

   Non renewable fuels created by fossils being crushed under the earth's crust for a long time

10. Renewable

    Energy that we will not run out of.

11. Non-renewable

    Energy that we will run out of.

12. Generator

    A magnet being pushed/pulled or turned inside of a coil of copper

13. Turbine

    A fan with a stick on it attached to a magnet that uses mechanical energy to spin the magnet inside of a conductive metal coil, electrons on the magnet coil are then excited which causes them to fall off and we can use those electrons to power machines

14. Conservation vs. efficiency

    Saving energy by not doing something vs. Not using as much energy to do the same thing

15. Insulation

    Material used to keep in heat, reducing that amount of energy needed to heat a home

17. Cogeneration

    Heat and electricity being taken from power plants instead of only energy, efficiency goes from 20% to 60ish%