Name: _____________________
Class: _________
Energy Take-Home Test
Directions: Complete all parts of this test for Tuesday, January 5. If it late you will lose 10
points for each day late. You may use your knowledge of science, notes, reading assignments,
textbook, and any other resources to help you complete this.
1) A common characteristic of sound waves is that they…
A) are created by vibrations
B) travel in straight lines toward the source
C) travel fastest through empty space
D) move at the speed of light
2) What color absorbs all light and does not reflect any?
1) Orange
3) Black
2) White
4) Pink
3) The diagram below represents several forms of electromagnetic energy.
Which feature best distinguishes one form of electromagnetic energy from another?
1) Wavelength
2) Color
3) Surface temperature
4) Distance traveled
4-5) Base your answers to questions 4 through 5 on the diagram below and you knowledge of
science. The diagram shows various forms of electromagnetic activity.
4) Four forms of electromagnetic activity is listed below:
Gamma Rays
Infrared Light
Radio Waves
Ultra violet light
In the chart below, list these four types of electromagnetic activity from the longest
wavelength to the shortest wavelength.
5) Four forms of electromagnetic activity is listed below:
Ultraviolet light
Microwave
X rays
Visible light
Complete the chart below identifying the forms of electromagnetic energy from the list
above that is described by each fact. Use each form of energy only once.
6) The diagram below shows a metal spoon in a glass of water.
Which process causes the metal spoon to appear split of broken?
1) Absorption
2) Refraction
3) convection
4) reflection
7) In number 6, what happens to the light waves when they reach the water that makes the
spoon appear to be broken?
1) the light waves speed up
2) the light waves slow down and change direction
3) the light waves travel straight
4) the light waves slow down and continue straight
8) Which sequence of energy transformations is possible when you rub your hands together?
1)
2)
3)
4)
mechanical
Sound
Mechanical
Chemical
light
chemical
thermal
light
thermal
sound
electrical
light
9) The diagram below a pinwheel rotating above a lit candle. The arrows indicate the direction
of air flow.
Which energy transformation is best shown in this diagram?
1) Heat (thermal) to mechanical
2) Mechanical to light
3) sound to heat (thermal)
4) heat (thermal) to sound
10) When a light is placed over a black sweater and a white sweater, which will become hotter
and why?
1) the white sweater will become hotter than the black because it reflects light
2) the white sweater will become hotter than the black because it absorbs light
3) the black sweater will become hotter than the white because it reflects light
4) the black sweater will become hotter than the white because it absorbs light
11) Base your answer on the following question on the information below and on your
knowledge of science.
The diagram shows a person observing a thunderstorm located several kilometers away. The
person hears the thunder several seconds after seeing the lightning.
11) Explain how sound travels through the air to the observer. (waves alone is not an
acceptable answer)
________________________________________________________________________
________________________________________________________________________
12) Base your answer to question 12 on the diagram of a moving car below and on your
knowledge of science. The diagram shows energy transformations.
12) What is the sequence of the energy transformations represented in the diagram?
1)
2)
3)
4)
Mechanical
chemical
solar
Solar
electrical
mechanical
Mechanical
electrical
solar
Solar
sound
electrical
13 & 14) The diagram below shows a light bulb, battery, and switch connected by wires.
13) Explain why the light bulb is not lit when the switch is in that position.
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
14) What would happen if they pushed the switch down connecting it to the wires and why?
______________________________________________________________________________
______________________________________________________________________________
15) The diagram below shows a toy airplane. The propeller is turned is turned twenty times, which
twists the rubber band connected to it. When the propeller is released, the rubber band unwinds and
the propeller turns at a high speed, enabling the airplane to fly.
What type of energy results when the rubber band unwinds and the propeller turns, allowing the plane
to fly?
_______________________________________
16) The diagram below shows a boulder rolling down a hill into a valley and the up the opposite
hill.
At which position does the boulder have the greatest potential energy?
1) A
3) C
2) B
4) D
17) ) Which statement best describes the energy changes that occur while a child is riding on a
skateboard down a steep hill?
1) Kinetic energy increases and potential energy increases
2) Kinetic energy decreases and potential energy increases
3) Both potential and kinetic energy decrease
4) Kinetic energy increases and potential energy decreases
18) Look at the diagram to the right, why would we
only see the red if all the colors of the rainbow are present?
1) all the colors are being reflected
2) all the colors are being absorbed
3) the red light is being reflected while all the other
colors are being absorbed
4) all the colors are being reflected except for the red
19) Look at the diagram to the right, why would we
only see the white if all the colors of the rainbow are
present?
1) all the colors are being reflected
2) all the colors are being absorbed
3) the red light is being reflected while all the other
colors are being absorbed
4) all the colors are being reflected except for the red
20) Look at the diagram to the right, why would we
only see the black if all the colors of the rainbow are
present?
1) all the colors are being reflected
2) all the colors are being absorbed
3) the red light is being reflected while all the other
colors are being absorbed
4) all the colors are being reflected except for the red