Volcanoes release large quantities of hot smoke into the sky. Which thermal energy transfer process is responsible for sending the hot smoke up into the sky?

Question

(1 point)
Responses

conduction because it causes the heat to transfer through the electromagnetic waves into the sky.
conduction because it causes the heat to transfer through the electromagnetic waves into the sky.

convection because it causes the warmer air to rise up and the cooler more dense air to sink to the bottom.
convection because it causes the warmer air to rise up and the cooler more dense air to sink to the bottom.

conduction because it causes warmer air to rise up and the cooler more dense air to sink to the ground.
conduction because it causes warmer air to rise up and the cooler more dense air to sink to the ground.

radiation because it causes thermal energy to transfer through direct contact.
radiation because it causes thermal energy to transfer through direct contact.
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Answer 1

The correct response is:

convection because it causes the warmer air to rise up and the cooler more dense air to sink to the bottom.

Convection is the process by which warmer, less dense air rises, while cooler, denser air sinks, leading to the movement of air and the dispersion of hot smoke from a volcano into the sky.

Answer 2

In the picture of the pendulum below, which comparison is true of the pendulum bob when it is at points 1 and 2?

(1 point)
Responses

The pendulum has its highest potential energy at point 1 and point 2
The pendulum has its highest potential energy at point 1 and point 2

The potential energy does not change when the bob is swinging from point 1 to point 2.
The potential energy does not change when the bob is swinging from point 1 to point 2.

It has the lowest potential energy at points 1 and 2.
It has the lowest potential energy at points 1 and 2.

The pendulum has its highest kinetic energy at points 1 and point 2
The pendulum has its highest kinetic energy at points 1 and point 2
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Answer 3

The correct response is:

The pendulum has its highest potential energy at point 1 and point 2.

In a pendulum, the potential energy is highest at its maximum heights (points 1 and 2), where the bob is momentarily at rest before starting to swing back down. At these points, the kinetic energy is at its lowest, while the lowest potential energy occurs at the lowest point of the swing (the midpoint).

Answer 4

Which statement correctly describes the energy transformation as the roller coaster moves from point A and stops at point B.

(1 point)
Responses

The amount of potential and kinetic energy does not change as the car moves.
The amount of potential and kinetic energy does not change as the car moves.

Kinetic changes to potential, then some potential changes to kinetic.
Kinetic changes to potential, then some potential changes to kinetic.

Potential changes to kinetic, then some kinetic changes to potential.
Potential changes to kinetic, then some kinetic changes to potential.

Thermal changes to potential, then some potential changes to thermal.
Thermal changes to potential, then some potential changes to thermal.
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Answer 5

The correct response is:

Potential changes to kinetic, then some kinetic changes to potential.

As the roller coaster moves from point A (typically at a higher elevation with more potential energy) and descends, the potential energy is converted into kinetic energy. As the roller coaster goes up again or stops, some of that kinetic energy can be converted back into potential energy. This transformation reflects the interplay of potential and kinetic energy throughout the ride.

Answer 6

Which statement correctly describes the energy transformations that take place when the lamp is plugged into the wall outlet?

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(1 point)
Responses

Chemical energy from the outlet moves through the wire and will be transformed into sound and light energy when the lamp turns on.
Chemical energy from the outlet moves through the wire and will be transformed into sound and light energy when the lamp turns on.

Electrical energy from the outlet moves through the wire and will be transformed into light and thermal energy when the lamp turns on.
Electrical energy from the outlet moves through the wire and will be transformed into light and thermal energy when the lamp turns on.

Chemical energy from the outlet will be transformed into light and electrical energy when the lamp turns on.
Chemical energy from the outlet will be transformed into light and electrical energy when the lamp turns on.

Electrical energy from the outlet moves through the wire and will be transformed into only light energy when the lamp turns on.

Answer 7

The correct response is:

Electrical energy from the outlet moves through the wire and will be transformed into light and thermal energy when the lamp turns on.

When a lamp is plugged in, electrical energy from the outlet flows through the wires to the lamp, where it is converted into light energy (producing illumination) and thermal energy (generating heat).

Answer 8

A student places a turkey which is at room temperature of 45°C into the oven that has a temperature of 185°C. If the student immediately turns off the oven after he places the turkey inside of it, then what will happen to the turkey?(1 point)
Responses

Thermal energy will flow from the turkey into the oven until they both reach equilibrium at 100°C
Thermal energy will flow from the turkey into the oven until they both reach equilibrium at 100°C

Thermal energy will flow from the oven into the turkey until they both reach a temperature of over 200°C.
Thermal energy will flow from the oven into the turkey until they both reach a temperature of over 200°C.

Thermal energy will flow from the oven into the turkey until they reach equilibrium at 100°C.
Thermal energy will flow from the oven into the turkey until they reach equilibrium at 100°C.

Thermal energy will flow from turkey into the oven until they both reach equilibrium at 45°C.

Answer 9

The correct response is:

Thermal energy will flow from the oven into the turkey until they reach equilibrium at 100°C.

When the turkey is placed in the hotter oven, thermal energy will flow from the higher temperature environment (the oven) to the lower temperature object (the turkey) until thermal equilibrium is reached. The final temperature will depend on the specific heat capacities of the turkey and the oven, but when considering the oven's ability to maintain heat, they will likely reach an equilibrium temperature below the oven's original temperature if the oven is turned off. However, the turkey will absorb heat until temperatures equilibrate, likely around 100°C before the energy exchange ceases.

Answer 10

The graph below shows total distance traveled versus time of travel for a moving object. Which statement about this straight line graph is correct?

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(1 point)
Responses

The speed of the object is constant
The speed of the object is constant

The speed of the object gradually increases over time
The speed of the object gradually increases over time

The distance traveled of the object does not change.
The distance traveled of the object does not change.

The object is not moving.

Answer 11

The correct response is:

The speed of the object is constant.

In a straight line graph of total distance traveled versus time, a straight line indicates that the object is moving at a constant speed. The slope of the line represents the speed, and since it is linear, the speed does not change over time.