WorksheetsEnergy Unit Test Review
Total questions: 20
Worksheet time: 10mins
In which of these objects does the following energy transformation occur?
POTENTIAL CHEMICAL ENERGY TO KINETIC MECHANICAL ENERGY
remote control car
toaster
rubber band
coffee maker
Of these items, which uses sunlight to generate electricity?
Which of the following is an example of the transformation of mechanical energy into sound energy?
heat from a campfire
battery in a flashlight
a violin being played
ice cream melting
Of these items, which best represents the conversion of potential energy into electric energy?
The Law of __________ of Energy states that energy cannot be created and cannot be destroyed. So when energy is converted, the total amount of energy stays the same.
Decimation
Congregation
Decoration
Conservation
True or false: This roller coaster car can travel from Point 1 to Point 2 without any outside force?
True because Point 2 at the end of the coaster track is a little lower than Point 1.
False. Even though Point 2 is a little lower than Point 1, the car will not have enough kinetic energy to make it over the tall hill.
True because the car will gather more potential energy when it gets to the top of the tall hill.
False. Point 2 is much higher than Point 1 so there's not enough kinetic energy.
What type of energy transformation occurs in a stove burner?
thermal (heat) to chemical
electric to thermal (heat)
thermal (heat) to sound
sound to electric/electricity
Which of these best represents the following energy transformation:
CHEMICAL TO ELECTRIC TO MAGNETIC
When a battery runs out, what is happening?
a circuit becomes disconnected and the energy transforms back into chemical energy
all light energy transforms into heat energy
all chemical energy in the battery is transformed into other forms of energy
all heat energy transforms into light energy
In our memory tools we learned that MOTOR "MAKES" MECHANICAL. Since generators are the opposite, __________.
generators transform thermal energy into mechanical energy
generators transform electrical energy into heat energy
generators transform nuclear energy into mechanical energy
generators transform mechanical energy into electrical energy
True or false: The only thing you need to create a magnetic field is a current flowing through a wire.
True
False
Which of the following is an example of thermal transfer by radiation?
sunlight heating a car
a heating pad on an injury
hot and cold ocean currents mixing
a metal spoon being heated in a mug of hot chocolate
In heat transfer some items, like a metal spoon, are __________ - which easily transfer heat.
convection
insulators
conductors
radiation
When heat is transferred within a fluid, by currents, it is an example of __________.
conduction
convection
radiation
reliability
Warming your hands by the campfire is an example of what form of thermal energy transfer?
conduction
convection
radiation
reliability
True or false: Most metals are excellent conductors of electricity.
True
False
What simple machine is represented here.
lever
wedge
pulley
screw
A __________ is an example of a lever.
shovel
flagpole
doorstop
bottle cap
Ramp is another name for __________.
screw
inclined plane
wheel and axle
wedge
True or false: You're learning more every day and you're going to succeed this school year!!
True
Pick the other answer because you ARE going to be successful! :)
