Concepts and Definitions
What is energy?
The ability to do work or cause change.
What are the 3 temperature scales?
Celsius, Fahrenheit, Kelvin
Name one type of energy.
Sound / Thermal / Kinetic / Potential / Electrical, etc.
Name a renewable energy source.
Solar, Wind, Hydro, Geothermal
What is kinetic energy?
Energy of motion
What is the unit of energy?
Joule (J)
Convert 0°C to Kelvin.
273 K
Which type of energy is used in solar panels?
Solar energy
Name a non-renewable energy source.
Coal, Oil, Natural Gas
What is potential energy?
Stored energy based on position
Define the Law of Conservation of Energy.
Energy cannot be created or destroyed, only transformed.
Convert 40 °C to °F.
104
What type of energy is stored in food?
Chemical energy
Is nuclear energy renewable? Explain.
No. Uranium is limited.
On a roller coaster, where is potential energy highest?
At the top of the hill
What is work?
Exertion or effort directed to produce or accomplish something.
Convert 77 °F to °C
25 °C
What type of energy is produced by a moving car?
Kinetic or mechanical energy
Why are fossil fuels considered non-renewable?
They take millions of years to form.
On a swing, when is kinetic energy at maximum?
At the bottom of the swing
What is a dynamo?
A machine for converting mechanical energy into electrical energy
Convert 77 °F to °K
298
Identify 3 types of energy in a flashlight.
Chemical (battery), Electrical, Light
List 2 advantages and 2 disadvantages of renewable energy.
Adv: clean, sustainable; Disadv: expensive, weather-dependent
Explain how energy changes as a roller coaster moves.
Potential converts to kinetic going down; kinetic converts to potential going up.