Energy Test Review

  1. What are the 3 fossil fuels discussed in class? Coal, petroleum, natural gas

2.  Why are fossil fuels considered nonrenewable?

they are being used faster than they are being replaced;  they take millions of years to form

3.  Define potential energy. stored energy

4.  Define kinetic energy.  energy of motion

5.  Put a P for potential energy and a K for kinetic energy.

energy stored in a battery

Potential

a stationary object

Potential

a diver standing on platform

Potential

a biker pedaling down the road Kinetic

 a  rock rolling down a hill

Kinetic

a diver jumping off the cliff

Kinetic

6.  Heat always moves from hot to cold.

7.  Fill in the Blanks

Conduction

Convection

Radiation

Conduction  heat transfer by direct touch

Radiation heat transfer by waves
Convection
 warm air rises, cool air sinks

8.  Give example of conduction. touching an iron, air TOUCHING earth’s surface

9.  Give an example of radiation. sun’s rays

10. Give an example of convection.  boiling water, hot rises, cool sinks

11. Define and give an example of mechanical energy.  energy due to motion or position; turbines turning, car moving

12.  Define and give an example of chemical energy.  energy available for release through chemical reactions; digesting food, energy conversion in a battery,

13.  Define and give an example of electrical energy.  energy of movement of electrons, easily transported through power lines; electricity moving through wires

14.  Water flows through the turbine blades and turns the shaft. The turning shaft then powers a generator. What energy conversion takes place in the water turbine generator?  mechanical to electrical

15. Describe the energy transformation that occurs in a gas power car moving up a hill.  chemical to mechanical

energy transformation

conserving energy

reserves

geothermal

hydroelectric power

convection

Draw a flashlight and explain the energy transformations that occur.


Resource

Renewable or Nonrenewable

Define

Advantage

Disadvantage

Solar Power

renewable

energy from the sun

clean resource, will not run out for billions of years

expensive solar panels

Wind Power

renewable

energy from wind

renewable,

not always reliable

Fossil Fuels

non renewable

energy from remains of fossilized plants and animals

cheap, and efficient

causes pollution, not renewable

Hydroelectric

renewable

energy from falling water

renewable, reliable,

dams expensive, damage to the environment

Geothermal

renewable

energy from beneath earths surface

supplies much energy with little or no fuel, good for environment

not available to all areas

biomass

renewable

energy from waste materials

renewable, cheap

requires  a lot of biomass materials to supply energy

nuclear

non renewable

energy from the splitting of atoms

cheap and efficient

nuclear waste

17.  Draw a flow chart that explains the energy transformations that happen within an electrical power plant using coal.