Vocabulary
What is the ability to make something move, happen, or change?
energy
Which form of energy is caused by moving electric charges, like electricity?
(a) mechanical
(b) thermal
(c) light
(d) electric
(e) sound
(d) electric energy
A hair dryer transforms electrical energy into what two forms of energy?
(a) thermal
(b) light
(c) mechanical
(d) electrical
(e) sound
(a) thermal and (e) sound energy.
Energy can be created but cannot be destroyed.
Is this TRUE or FALSE?
FALSE
Energy can NEITHER be created nor destroyed.
What is the difference between renewable and nonrenewable resources?
Renewable resources can naturally replenish themselves while nonrenewable resources cannot.
What is the movement of energy from one place to another?
For example, electrical energy moves from the wall outlet, through the wire, and into Mrs. Finley's beloved coffee pot - causing the machine pot to work!
transfer of energy
Which form of energy is caused by vibrations, allowing us to hear?
(a) mechanical
(b) thermal
(c) light
(d) electric
(e) sound
(e) sound energy
A toaster transforms electrical energy into what form of energy?
(a) thermal
(b) light
(c) mechanical
(d) electrical
(e) sound
(a) heat (thermal) energy
The switch of a simple circuit is the energy source.
Is this TRUE or FALSE?
FALSE
The switch opens and closes the circuit, either allowing electricity to flow through or keeping electricity from flowing through.
Alternative Energy comes from a source that will not run out. For example, solar energy can be used time and time again.
What is another name for alternative energy?
(a) renewable energy
(b) fast energy
(c) nonrenewable energy
(d) man-made energy
(a) renewable energy
What is it called when one form of energy changes into another form of energy?
For example, a television converts electrical energy to thermal, light, and sound energy.
energy transformation
Which form is all the energy an object has because of its motion and stored energy?
(a) mechanical
(b) thermal
(c) light
(d) electric
(e) sound
(a) mechanical energy
A light bulb transforms what kind of energy into light energy?
(a) thermal
(b) light
(c) mechanical
(d) electrical
(e) sound
(d) electrical energy
Fossils fuels are formed from dead animals and plants.
Is this TRUE or FALSE?
TRUE.
Fuels have stored energy that are released when burned. Coal, oil, and natural gas are fossil fuels.
Coal, natural gas, nuclear energy, and oil are all examples of what form of energy?
(a) renewable energy
(b) nonrenewable energy
(b) nonrenewable energy
What are resources found on Earth that are used to meet needs and sustain life?
*Can be renewable or nonrenewable.
natural resources
Which form of energy comes from heat?
*The higher the temperature of the object, the more of this form of energy it has.
(a) mechanical
(b) thermal
(c) light
(d) electric
(e) sound
(b) thermal energy
The Avengers were on an important mission. While Captain America and Black Widow snuck into the enemy's lair, Hawkeye station himself on the roof, pulled back his bow, and prepared to help if needed.
Hawkeye's bow now has potential energy. What energy transformation would take place if he released his arrow?
potential energy -----> ? energy
potential energy ---> mechanical energy
When an object is at rest, it has kinetic energy. When an object is in motion, it has potential energy.
Is this TRUE or FALSE?
FALSE
potential energy = stored energy
kinetic energy = motion energy
Solar, wind, trees, animals, and geothermic energy are all examples of what form of energy?
(a) renewable energy
(b) nonrenewable energy
(a) renewable energy
What is the prevention of wasteful use of a resource?
For example, we could recycle plastic bottles to be used again and to keep the environment clean, or we could save electricity by turning off lights when we don't need them and not leaving things like the TV on when no one's watching it.
conservation
Which form of energy helps us see objects?
(a) mechanical
(b) thermal
(c) light
(d) electric
(e) sound
(c) light energy
Chemical energy is stored in wood. When wood is burned, it converts into which two forms of energy?
heat energy and light energy
Grace is building a snowman. She notices that every time she makes a snowball, her hands get cold. Her brother told her that her hands get cold when she makes a snowball because the heat from Grace's hands is transferred to the snowball.
Is this TRUE or FALSE?
It is TRUE.
Heat always spontaneously flows from a body at a higher temperature to a body at a lower temperature. When we hold a snowball in our hands, a transfer of heat takes place from our hands (higher temperature) to the snowball (lower temperature).
A student thinks that using wind energy is more beneficial than using oil. The student writes several statements about using wind energy:
1. Wind stations can produce electricity.
2. Wind energy will not run out.
3. Wind stations can be set up easily and at low cost.
4. Wind energy does not produce pollution.
Which statement is incorrect about wind energy?
Statement 3 - Wind stations can be set up easily and at low cost.
On average, wind turbines cost about $1 million per MW, or around $2 million to $4 million each. Larger offshore wind turbines can cost tens of millions of dollars. The largest wind turbine to date, which has a capacity of 12 MW, costs $400 million to manufacture and install.