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WorksheetsPhysical Science - CH 4 Energy Test Review
Total questions: 54
Worksheet time: 2hrs 30mins
Gravitational potential energy depends on what?
Mass and Velocity
Mass and Weight
Weight and Height
Height and Distance
Your body obtains energy from the food that you eat. What is the form of that energy?
Kinetic
Elastic
Gravitational
Chemical
When an Archer bends back a bow, what type of energy is increased in the bow?
Gravitational
Elastic
Kinetic
Thermal
Which of these describes the law of conservation of energy?
No machine is 100% efficient
Energy can neither be created, nor destroyed
The energy resources of the Earth are limited
The energy of a system is always decreasing
As a roller coaster moves down a hill, gravitational potential energy is turned into Kinetic Energy, Thermal Energy, and Sound Energy. What is true about the total energy in the stystem?
Energy is gained (created) as the coaster moves down the hill.
Energy is lost (destroyed) as the roller coaster moves
The total energy remains the same as the coaster moves
The total amount of energy changes in some way while the roller coaster is moving
Which of the following in a conversion of radiant (light) energy into chemical energy?
Turning on a stove to heat up dinner
Turning on a lamp
The growth of an apple tree
Making toast in a toaster
At point X. the kinetic energy is 50 J and the potential energy is 30 J. What is the total energy in the system once the car reaches the bottom of the ramp?
A. 20 J, because the energy in the system cannot change form but can be created and destroyed
B. 80 J, because the energy in the system can change form but cannot be created or destroyed
C. 30 J, because the potential energy is the only energy at the bottom of the ramp
D. 50 J, because the kinetic energy is the only energy at the bottom of the ramp
the faster an object moves the more kinetic energy it has
A baseball player catches a moving ball. What happens to some of the ball's energy when it hits the player's mit?
It changes to light.
It changes to sound.
It changes to electricity.
It is destroyed.
A camper adds a log to the fire. What kind of energy is produced when the log burns?
Light, thermal energy, and sound.
Stored energy and chemical.
Electrical energy and thermal energy.
Abigail picks up a book she left by a sunny window. She notices the book is warm to the touch. What can Abigail conclude from her observation?
Heat travels faster than light.
Light can transfer energy to objects and heat them.
Light travels faster than sound waves.
Heat air produces light.
A 200 kg boulder sits on top of a 203 m cliff. What is its P E when it reaches 100 m from the ground?
A. 196,000 J
B. 397,880 J
C. 20,909 J
D. 40,600 J
A student decides to take up diving as a hobby. He stands on a high-dive that is 4 m tall. If the student has a mass of 50 kg, what is his P E?
A. 200 J
B. 1,960 J
C. 12.5 J
D. 800 J
Things like friction and air resistance take away energy from a moving object, where does the energy they take away go?
gravitational potential energy
it dissapears and is no longer energy
it is dissipated to things like heat and sound
You do work only when you exert a force on an object and move it
t = 25 seconds
P = ???
A book and a feather sitting next to each other on a shelf have ____________potential energies.
Different
Double
The Same
No
A toaster uses ____________ energy to make toast.
Thermal
Potential
Electrical
Elastic
____________ energy is the total amount of potential and kinetic energy in a system.
Chemical
Thermal
Mechanical
Nuclear
If I carry a 50 kg sack of grain from the barn to the feeding trough (roughly 100 meters away), how much work did I do? Not counting lifting the sack up to my shoulder.
5,000 J
2 J
150 J
0 J
