5. An object’s gravitational potential energy depends on the object’s mass, the strength of the gravitational field, and what other variable?(1 point)
Responses
the shape of the object
the shape of the object
the color of the object
the color of the object
the object's height from the ground
the object's height from the ground
the speed of the object
17 answers
the object's height from the ground
6. If you are at an amusement park and you ride a slingshot, how does your potential energy compare to your kinetic energy at the top of the shot?
(1 point)
Responses
The kinetic energy is twice the amount of potential energy.
The kinetic energy is twice the amount of potential energy.
Kinetic energy is greater than potential energy.
Kinetic energy is greater than potential energy.
The kinetic energy and potential energy are the same.
The kinetic energy and potential energy are the same.
The kinetic energy is less than potential energy.
(1 point)
Responses
The kinetic energy is twice the amount of potential energy.
The kinetic energy is twice the amount of potential energy.
Kinetic energy is greater than potential energy.
Kinetic energy is greater than potential energy.
The kinetic energy and potential energy are the same.
The kinetic energy and potential energy are the same.
The kinetic energy is less than potential energy.
The kinetic energy is less than potential energy.
If we don’t consider friction, what happens to the total mechanical energy as the pendulum swings from position A to position B?
(1 point)
Responses
It is not conserved
It is not conserved
It becomes greater.
It becomes greater.
It declines
It declines
It remains the same
(1 point)
Responses
It is not conserved
It is not conserved
It becomes greater.
It becomes greater.
It declines
It declines
It remains the same
It remains the same.
9. Rebecca climbs the ladder of a large water slide, waits her turn at the top, and then slides down the slide into a pool. Which answer best describes the energy changes during her time on the slide?(1 point)
Responses
kinetic → potential → kinetic
kinetic → potential → kinetic
potential → kinetic → potential
potential → kinetic → potential
kinetic → mechanical → potential
kinetic → mechanical → potential
potential → mechanical → kinetic
potential → mechanical → kinetic
Responses
kinetic → potential → kinetic
kinetic → potential → kinetic
potential → kinetic → potential
potential → kinetic → potential
kinetic → mechanical → potential
kinetic → mechanical → potential
potential → mechanical → kinetic
potential → mechanical → kinetic
potential → kinetic → potential
10. Kim is upstairs, but walks downstairs to the kitchen for a snack. Which statement correctly describes the types of energy she has at the top of the stairs and as she walks down the stairs?(1 point)
Responses
kinetic energy at the top of the stairs; kinetic energy as she walks down
kinetic energy at the top of the stairs; kinetic energy as she walks down
kinetic energy at the top of the stairs; potential energy as she walks down
kinetic energy at the top of the stairs; potential energy as she walks down
potential energy at the top of the stairs; kinetic energy as she walks down
potential energy at the top of the stairs; kinetic energy as she walks down
potential energy at the top of the stairs; potential energy as she walks down
Responses
kinetic energy at the top of the stairs; kinetic energy as she walks down
kinetic energy at the top of the stairs; kinetic energy as she walks down
kinetic energy at the top of the stairs; potential energy as she walks down
kinetic energy at the top of the stairs; potential energy as she walks down
potential energy at the top of the stairs; kinetic energy as she walks down
potential energy at the top of the stairs; kinetic energy as she walks down
potential energy at the top of the stairs; potential energy as she walks down
potential energy at the top of the stairs; kinetic energy as she walks down
13. The picture illustrates the solar panels that power all of the appliances in Joshua's house. What energy transformations occur that enable Joshua to bake cookies for his family in the oven? (1 point)
Responses
light energy → electrical energy → heat energy
light energy → electrical energy → heat energy
heat energy → light energy → heat energy
heat energy → light energy → heat energy
light energy → electrical energy → chemical energy
light energy → electrical energy → chemical energy
heat energy → chemical energy → light energy
Responses
light energy → electrical energy → heat energy
light energy → electrical energy → heat energy
heat energy → light energy → heat energy
heat energy → light energy → heat energy
light energy → electrical energy → chemical energy
light energy → electrical energy → chemical energy
heat energy → chemical energy → light energy
light energy → electrical energy → heat energy
14. As energy is transferred or conserved, some of that energy becomes unavailable to do work. What happens to this unavailable energy?(1 point)
Responses
The unavailable energy is given off as microwaves
The unavailable energy is given off as microwaves
The unavailable energy is given off as heat
The unavailable energy is given off as heat
The unavailable energy is destroyed
The unavailable energy is destroyed
The unavailable energy is conducted
Responses
The unavailable energy is given off as microwaves
The unavailable energy is given off as microwaves
The unavailable energy is given off as heat
The unavailable energy is given off as heat
The unavailable energy is destroyed
The unavailable energy is destroyed
The unavailable energy is conducted
The unavailable energy is given off as heat.
18. Which investigation would best show the transfer of heat energy without any type of matter as a medium?(1 point)
Responses
an investigation of radiation using a current within a fluid
an investigation of radiation using a current within a fluid
an investigation of radiation using electromagnetic waves
an investigation of radiation using electromagnetic waves
an investigation of conduction through movement of particles within a solid
an investigation of conduction through movement of particles within a solid
an investigation of conduction using collisions between particles
Responses
an investigation of radiation using a current within a fluid
an investigation of radiation using a current within a fluid
an investigation of radiation using electromagnetic waves
an investigation of radiation using electromagnetic waves
an investigation of conduction through movement of particles within a solid
an investigation of conduction through movement of particles within a solid
an investigation of conduction using collisions between particles
an investigation of radiation using electromagnetic waves
19. Convection ovens cook food more evenly than a standard thermal oven. Which statement explains how a convection oven works?(1 point)
Responses
Hot air is transferred when heat radiates from a thermal burner.
Hot air is transferred when heat radiates from a thermal burner.
Hot air is transferred through density differences when hot air rises and cool air sinks.
Hot air is transferred through density differences when hot air rises and cool air sinks.
Hot air is transferred through density differences when cool air rises and hot air sinks.
Hot air is transferred through density differences when cool air rises and hot air sinks.
Hot air is transferred through direct molecule contact.
Hot air is transferred through direct molecule contact.
Question 20
20. People use oven mitts to avoid getting burns when moving hot metal pans while cooking. Which physical property of the metal pan requires the use of an oven mitt when it is hot?(1 point)
Responses
High solubility
High solubility
Low thermal conductivity
Low thermal conductivity
High thermal conductivity
High thermal conductivity
Low magnetism
Low magnetism
Responses
Hot air is transferred when heat radiates from a thermal burner.
Hot air is transferred when heat radiates from a thermal burner.
Hot air is transferred through density differences when hot air rises and cool air sinks.
Hot air is transferred through density differences when hot air rises and cool air sinks.
Hot air is transferred through density differences when cool air rises and hot air sinks.
Hot air is transferred through density differences when cool air rises and hot air sinks.
Hot air is transferred through direct molecule contact.
Hot air is transferred through direct molecule contact.
Question 20
20. People use oven mitts to avoid getting burns when moving hot metal pans while cooking. Which physical property of the metal pan requires the use of an oven mitt when it is hot?(1 point)
Responses
High solubility
High solubility
Low thermal conductivity
Low thermal conductivity
High thermal conductivity
High thermal conductivity
Low magnetism
Low magnetism
Hot air is transferred through density differences when hot air rises and cool air sinks.
Low thermal conductivity.
Low thermal conductivity.
1 answer