Kinetic and Thermal Energy Quick Check

1. What is kinetic energy?
- Kinetic energy is the energy possessed by a moving object.

2. What are the factors that determine an object’s kinetic energy?
- An object's kinetic energy is determined by its mass and velocity.

3. What is thermal energy?
- Thermal energy is the energy possessed by a substance due to the movement of its molecules.

4. How does thermal energy transfer occur?
- Thermal energy transfer can occur through conduction, convection, or radiation.

5. What is the difference between kinetic and thermal energy?
- Kinetic energy is the energy possessed by a moving object, while thermal energy is the energy possessed by a substance due to the movement of its molecules. Kinetic energy is usually associated with macroscopic objects, while thermal energy is associated with the microscopic motion of particles within a substance.

What is kinetic energy?(1 point)
Responses

thermal energy
thermal energy

the energy of radiation
the energy of radiation

the energy of motion
the energy of motion

stored energy

the energy of motion

A fisherman in a boat is drinking a cup of hot coffee. The large lake below his boat is full of cold water. Which statement is an accurate comparison of the lake water and the coffee?(1 point)
Responses

The lake will have more total thermal energy, and the particles in the lake water will be moving faster.
The lake will have more total thermal energy, and the particles in the lake water will be moving faster.

The lake will have more total thermal energy, but the particles in the coffee will be moving faster.
The lake will have more total thermal energy, but the particles in the coffee will be moving faster.

The coffee will have more total thermal energy, but the particles in the lake water will be moving faster.
The coffee will have more total thermal energy, but the particles in the lake water will be moving faster.

The coffee will have more total thermal energy, and the particles in the coffee will be moving faster.

The lake will have more total thermal energy, but the particles in the coffee will be moving faster.

The gallium in the image is melting in the person’s hand. Which changes will occur on a microscopic level?

(1 point)
Responses

The gallium atoms will gain potential energy, moving freely from each other.
The gallium atoms will gain potential energy, moving freely from each other.

The gallium atoms will increase in temperature.
The gallium atoms will increase in temperature.

The gallium atoms will be moving faster on average.
The gallium atoms will be moving faster on average.

The gallium atoms will gain kinetic energy.

The gallium atoms will gain kinetic energy.

Which object will have particles with the highest average kinetic energy?(1 point)
Responses

water at 37°C in a glass
water at 37°C in a glass

an iceberg at 0°C
an iceberg at 0°C

a drop of water at 90°C
a drop of water at 90°C

water at 40°C in a swimming pool

A drop of water at 90°C.

Thermal energy is transferred to a substance. Which change can occur?(1 point)
Responses

The particles can gain kinetic energy, but the potential energy of the particles will stay the same.
The particles can gain kinetic energy, but the potential energy of the particles will stay the same.

The particles will gain potential energy, but the kinetic energy of the particles will stay the same.
The particles will gain potential energy, but the kinetic energy of the particles will stay the same.

The kinetic and potential energy of the particles will stay the same.
The kinetic and potential energy of the particles will stay the same.

The particles can gain potential and kinetic energy.

The particles can gain potential and kinetic energy.