Chapter 9 Review Word Scramble

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Chapter 9 Review

Energy and Energy Resources Test Review

Question	Answer
How do you calculate kinetic energy?	mass times velocity squared divided by 2
How do you calculate gravitational potential energy?	weight times height
What units are used for Energy?	Joules
What are some examples of renewable resources?	water, wind energy, solar energy, geothermal energy
What best describes fossil fuels?	energy resources that formed from the buried remains of plants and animals; a nonrenewable resource
Converts chemical energy to electrical energy	battery
What happens when electrical energy is changed to thermal energy?	an energy conversion takes place
When a bat hits a baseball, what is transferred from the bat to the ball?	energy
As a softball flies through the air after being hit, which type of energy does it have?	kinetic energy
After energy conversions, you end up with the same total amount of energy as the originial amount of potential energy. Which law explains this rule?	Law of Conservation of Energy
Anytime an energy conversion takes place, some of the originial energy is converted to what?	thermal/heat energy
What is found when you compare the amount of energy before a conversion with the amount of energy present after a conversion?	energy efficiency
What is a force that opposes motion between two surfaces that are touching?	friction
When is the potential energy the greatest in any roller coaster ride?	at the top of the first hill
The energy an object has because of its motion	kinetic energy
The energy that is dependent on an object's height above the surface of the Earth	gravitational potential energy
The energy of moving electrons	electrical energy
The ability to do work	energy
The heat energy that is produced by the internal motion of particles	thermal/heat energy
The energy caused by an object's vibrations	sound energy
The energy an object has because of its position	potential energy
The electromagnetic radiant energy that is produced by vibrations of charged particles	light energy
The total energy of motion and position of an object	mechanical energy
Describe the energy conversions in a hair dryer	electrical to thermal/heat energy and sound energy
What are some examples of nonrenewable resources?	coal, petroleum and natural gas
Describe the energy conversions in a roller coaster	PE is the greatest at the top of the first hill. KE at the bottom of the first hill is less than the PE at the top was. PE at the top of the second hill is less than the KE and PE from the first hill.
Describe the energy conversion for an alarm clock	electrical energy to light and sound energy
Describe the energy conversion for a light bulb	electrical energy to light and thermal energy
Describe the energy conversion for a blender	electrical energy to kinetic and sound energy

Created by: lbeazlietms on 2010-03-23