Kinetic and Potential Energy Quick Check
Science 8 Q1 / Energy of Motion
An object falls through the air, gaining speed as it falls. A student claims that this creates new energy, and so it breaks the law of conservation of energy. Which statement describes why the student is incorrect? (1 point)
Responses
Energy is converted from other forms, not created.
Energy can be created without breaking the law of conservation of energy.
Speed is not related to energy in any way.
Equal and opposite amounts of other energy are also created.
3 it incorect it really is {The potential energy will stay the same as long as the book stays on the table. The kinetic energy increases when the book is shoved and then gradually decreases as it slides across the table and then comes to rest on the edge}.
The correct statement is: Energy is converted from other forms, not created.
The correct answer is: when the ball is at its highest point
The correct answer is: stored energy
Kinetic and Potential Energy Quick Check
Science 8 Q1 / Energy of Motion
A person throws a ball up into the air, and the ball falls back toward Earth. At which point would the kinetic energy be the lowest?(1 point)
Responses
at a point before the ball hits the ground
at a point when the ball is still rising
when the ball leaves the person’s hand
when the ball is at its highest point
Kinetic and Potential Energy Quick Check
Science 8 Q1 / Energy of Motion
A book is at rest on a flat table. A person gives the book a shove and it slides across the table. The book eventually comes to rest again near the edge of the table. How does the potential and kinetic energy change during this process?(1 point)
Responses
The potential and kinetic energy are the same while the book is sitting on the table. They both increase when the book is shoved and then decrease as the book comes to rest again.
The potential energy increases as the book is pushed across the table. The kinetic energy stays the same since the book was shoved.
The potential energy will stay the same as long as the book stays on the table. The kinetic energy increases when the book is shoved and then gradually decreases as it slides across the table and then comes to rest on the edge.
The potential stays the same since the book is on the table. The kinetic energy stays the same since the book was only shoved.
Kinetic and Potential Energy Quick Check
Science 8 Q1 / Energy of Motion
Which is a good description of potential energy?(1 point)
Responses
conserved energy
energy of motion
stored energy
energy of reaction