WorksheetsEnergy Unit
Total questions: 35
Worksheet time: 18mins
Potential energy is ...
stored, not in use
in motion, in use
All of the following are examples of kinetic energy EXCEPT:
light
wind
moving water
stretched rubber band
All of the following are forms of potential energy EXCEPT:
gravitational
thermal
elastic
chemical
The total amount of energy in an energy conversion ....
decreases if it changes to a lower form
stays the same but changes form
increases if it changes to a stronger form
Which one of the following is NOT an example of chemical potential energy?
coal (before it's burned)
food
wind
batteries
Wind and moving water are examples of ....
gravitational PE
elastic PE
mechanical KE
thermal KE
A flashlight converts _________ energy into ______ and _______.
chemical, electrical, radiant
chemical, radiant, mechanical
electrical, chemical, radiant
What is the ultimate source of energy on Earth?
the moon
the Sun
coal
fossil fuels
The chemical potential energy stored in fossil fuels originally came from....
dead plant and animals
the Sun
Earth's core
The most abundant greenhouse gas is....
methane
CO2
water vapor
We can only see a tiny portion of the electromagnetic spectrum. We call this portion....
gamma
ultraviolet
invisible
visible
Visible light includes all the colors we can see. The one with the longest wavelength is....
red
violet
blue
green
The acronym for the colors of visible light from longest wavelength to shortest are:
ROYGBIV
ROYIV
VIBGYOR
All of the following are wavelengths shorter than visible light EXCEPT:
radio
UV
gamma
x-ray
An egg in a frying pan is an example of:
radiation
conduction
convection
A bowl of soup cools off due to ...
conduction
convection
radiation
The transfer of heat between two substances that are in direct contact is...
conduction
convection
radiation
Hot air will rise because it is....
more dense than cool air
less dense than cool air
Pushed up by wind
Wind is a _____________ current. Wind is caused by the uneven heating of Earth's surface.
blowing
uneven
conduction
convection
Roughly ___% of the sun’s solar energy is absorbed by the land (and water on Earth's surface).
30
40
50
60
Warm air or water __________(rises or falls) because it is _________ (more or less) dense.
rises/less
rises/more
falls/less
falls/more
What happens to about one-third of the sun's incoming energy?
it is reflected back out to space
it is absorbed by land and water
it is trapped in our atmosphere by greenhouse gases
it changes immediately into a convection current
What type of energy does a windmill use to do work?
thermal
mechanical
electrical
The acronym that can be used to help you remember the forms of KINETIC energy is:
LIGHT
MELTS
WIND
During the day, land heats up faster than water. Warmer, less dense air rises from the land and the cooler, more dense air moves in from the ocean. This moving air is the wind. This describes a land or sea breeze?
land breeze
sea breeze
When you sit in front of a fireplace the heat reaching your hands is an example of___________
conduction
convection
radiation
Another word for heat energy
radiant
electrical
thermal
Another word for light energy
heat
thermal
radiant
electricity
A secondary energy source is....
the Sun
solar
coal
electricity
The energy conversion taking place when you turn on a lamp is...
chemical to radiant and thermal
electrical to radiant and thermal
electrical to chemical and mechanical
A wavelength measures from crest to crest
True
False
Heat always moves from hot to cold.
True
False
Radiant energy (light) can travel without a medium (air/water/etc).
True
False
____________ radiation is felt as heat.
gamma
infrared
ultraviolet
radio
All of the following are excellent conductors of heat (thermal energy) EXCEPT:
rubber
copper
gold
aluminum
