Which factors determine the potential energy of an object?(1 point)
Responses
Mass and velocity
Gravity and position
Weight and velocity
Mass and position
23 answers
Gravity and position
An object’s gravitational potential energy is dependent on the object’s mass, the strength of its gravitational field, and which of the following: (1 point)
Responses
the shape of the object
the height of the object
the velocity of the object
the temperature of the object
Responses
the shape of the object
the height of the object
the velocity of the object
the temperature of the object
the height of the object
Lucy picks up an object from the floor. How will the potential energy change if Lucy lifts the object above her head?(1 point)
Responses
The object's potential energy will stay the same.
The object's potential energy will decrease.
The object's potential energy will be zero.
The object's potential energy will increase.
Responses
The object's potential energy will stay the same.
The object's potential energy will decrease.
The object's potential energy will be zero.
The object's potential energy will increase.
The object's potential energy will increase.
Complete the following statements with the correct words.(1 point)
An object that is stationary has _______ energy. When the object is pushed, that energy transfers to ________ energy. Throughout this energy transfer, the object's total energy _______.
An object that is stationary has _______ energy. When the object is pushed, that energy transfers to ________ energy. Throughout this energy transfer, the object's total energy _______.
An object that is stationary has potential energy. When the object is pushed, that energy transfers to kinetic energy. Throughout this energy transfer, the object's total energy remains constant.
When a baseball is at rest and then is thrown, what is the relationship between the ball’s potential and kinetic energy? (1 point)
Responses
As the ball’s potential energy decreases, its kinetic energy increases.
As the ball’s potential energy increases, its kinetic energy increases.
As the ball’s potential energy increases, its kinetic energy decreases.
As the ball’s potential energy decreases, its kinetic energy decreases.
Responses
As the ball’s potential energy decreases, its kinetic energy increases.
As the ball’s potential energy increases, its kinetic energy increases.
As the ball’s potential energy increases, its kinetic energy decreases.
As the ball’s potential energy decreases, its kinetic energy decreases.
As the ball’s potential energy decreases, its kinetic energy increases.
A student drops a ball from a height of 60 meters. The table below shows the ball’s speed and height as time passes.
At what point in time does the ball have the highest kinetic energy?
(1 point)
Responses
At the start (0 seconds)
After 0.5 seconds
After 2 seconds
After 2.5 seconds
At what point in time does the ball have the highest kinetic energy?
(1 point)
Responses
At the start (0 seconds)
After 0.5 seconds
After 2 seconds
After 2.5 seconds
The ball has the highest kinetic energy after 2.5 seconds.
A student observes a roller coaster at locations A, B, C, and D on the track.
Which statement is true according to the bar graph?
(1 point)
Responses
Both potential and kinetic energy change, but total energy does not change.
The roller coaster creates potential energy, but kinetic energy does not change.
The roller coaster creates kinetic energy.
The roller coaster destroys potential energy.
Which statement is true according to the bar graph?
(1 point)
Responses
Both potential and kinetic energy change, but total energy does not change.
The roller coaster creates potential energy, but kinetic energy does not change.
The roller coaster creates kinetic energy.
The roller coaster destroys potential energy.
Without the bar graph provided, I am unable to determine which statement is true according to the data.
Hydroelectric dams work by blocking the path of a water source to create an area with water held back by the dam. The dam can then be opened to allow water to be released.. The energy from the moving water is used and transformed into electrical energy. What type of energy does a hydroelectric dam capture as the water passes through?(1 point)
Responses
Light energy
Mechanical energy
Sound energy
Nuclear energy
Responses
Light energy
Mechanical energy
Sound energy
Nuclear energy
Mechanical energy
solar panels that power all appliances in a house.
An oven is being used to bake cookies in this house. What energy transformations occur when baking cookies in this house?
(1 point)
Responses
heat energy → light energy → chemical energy
heat energy → chemical energy → light energy
heat energy → electrical energy → chemical energy
light energy → electrical energy → heat energy
An oven is being used to bake cookies in this house. What energy transformations occur when baking cookies in this house?
(1 point)
Responses
heat energy → light energy → chemical energy
heat energy → chemical energy → light energy
heat energy → electrical energy → chemical energy
light energy → electrical energy → heat energy
heat energy → chemical energy → light energy
The total amount of energy in the universe never changes, but the availability of each different type of energy to do work can change tremendously. What best explains this change in available energy?(1 point)
Responses
Energy can only be created through nuclear reactions.
Energy is regularly changing from one form into another.
Energy is always converted with 100 percent efficiency.
Energy can only be transferred as heat.
Responses
Energy can only be created through nuclear reactions.
Energy is regularly changing from one form into another.
Energy is always converted with 100 percent efficiency.
Energy can only be transferred as heat.
Energy is regularly changing from one form into another.
What is the energy transformation that occurs when a smoke alarm goes off?(1 point)
Responses
electrical to potential
electrical to sound
potential to electrical
sound to light
Responses
electrical to potential
electrical to sound
potential to electrical
sound to light
electrical to sound
You are cooking pasta and putting a pot of water on an electric stove. When the water starts to boil, you add the pasta. What energy transformation occurs to cook the pasta? (1 point)
Responses
nuclear energy to heat energy
heat energy to mechanical energy
mechanical energy to light energy
electric energy to heat energy
Responses
nuclear energy to heat energy
heat energy to mechanical energy
mechanical energy to light energy
electric energy to heat energy
electric energy to heat energy
1 answer