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Energy 2
Test Description: Variety of Energy questions
Instructions: Answer all questions to get your test result.
1) Metal block A has a temperature of 25 degrees Celcius, while metal block B has a temperature of 17 degrees Celcius. How is energy transferred when both blocks come in contact with each other?
A
Block A temperature decreases, block B temperature increases
B
Block A temperature increases, block B temperature decreases.
C
Block A temperature decreases, block B temperature decreases.
D
Block A temperature increases, block B temperature increases.
2) A silver spoon at a temperature of 23 degrees Celcius is placed in a cup of water at 85 degrees Celsius. What will happen to the temperatures of these two substances over time?
A
The temperature of the spoon will increase and that of the water will decrease.
B
The temperature of the spoon and the water will increase.
C
The temperature of the spoon and the water will decrease.
D
The temperature of the spoon will decrease and that of the water will increase.
3) A piece of hot iron is placed in a beaker of ice water. If enough time goes by, which statement best describes the temperatures of the two substances?
A
The iron will be cold, and the water will be hot.
B
The iron will still be hot, the water will still be cold.
C
Both substances' temperatures will be between the starting temperatures.
D
Both substances' temperatures stay the same.
4) What happens to some of the energy when a lamp is turned on?
A
Some energy is created
B
Some energy is changed to matter.
C
Some energy is changed to heat.
D
Some energy is detroyed
5) Which scientific law describes what happens to the total amount of energy in a closed system?
A
Law of Absorption of Energy
B
Law of Transformation of Energy
C
Law of Conservation of Energy
D
Law of Creation of Energy
6) When a ball rolls across a gym floor is will slow down and eventually stop. What happens to the total amount of energy in the system?
A
total amount of energy decreases
B
total amount of energy stays the same
C
total amount of energy increases
D
total amount of energy constantly changes
7) Which object transfers electrical energy to mechanical energy and heat?
A
flashlight
B
computer
C
hair dryer
D
oven
8) How does energy transfer when a lamp is turned on?
A
electrical energy to chemical energy
B
electrical energy to sound energy
C
electrical energy to electrical energy
D
electrical energy to light energy
9) Which makes the metal spoon appear broken when placed in a clear glass of water?
A
Convection
B
Refraction
C
Reflection
D
Absorption
10) Why does a student see her image in a glass window on a sunny day?
A
some of the light is passed through the glass
B
some of the light is absorbed by the glass
C
some of the light is reflected off the glass
D
some of the light is separated by the glass
11) What can happen when light strikes a surface?
A
Light can be created
B
Light can be removed
C
Light can be destroyed
D
Light can be transmitted
12) What happens when light bends as it travels through two different substances?
A
Light is reflected
B
Light is absorbed
C
Light is destroyed
D
Light is refracted
13) If a rock is thrown in a pond, what happens to the kinetic energy of the rock?
A
the energy radiates in all directions
B
the energy radiates in only on direction
C
the energy radiates in two directions
D
the energy does not radiate at all
14) What produces waves?
A
energy
B
mass
C
magnetism
D
gravity
15) Mechanical waves travel fastest through which medium?
A
gasses
B
liquids
C
solids
D
vacuum
16) Which is NOT an example of waves traveling different speeds through different materials?
A
a full moon appears larger as it is rising
B
objects looking larger in a microscope
C
a pencil appearing broken in a glass of water
D
reflections in a spoon are upside down
17) What happens to light traveling through a pair of eye glasses?
A
diffusion
B
refraction
C
absorption
D
reflection
18) In what direction does heat transfer occur?
A
No specific direction
B
From warm objects to colder objects
C
Warm and cold objects do not interact
D
From cold objects to warmer objects
19) What determines the color of an opaque object?
A
electrical to light
B
electrical to chemical
C
electrical to sound
D
electrical to nuclear
20) Describe the transfer of energy that takes place when a radio is playing music.
A
the color of light that is refracted
B
the color of the light that is reflected
C
the color of light that is diffracted
D
the color of light that is transmitted
*select an answer for all questions
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