What is kinetic energy?(1 point)

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 coffee will have more total thermal energy, and the particles in the coffee 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 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 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.

Use the image to answer the question.

A photo shows a piece of gallium melting in someone’s hand.

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 gain kinetic energy.
The gallium atoms will gain kinetic energy.

The gallium atoms will be moving faster on average.

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

water at 40°C in a swimming pool
water at 40°C in a swimming pool

a drop of water at 90°C

A drop of water at 90°C.

As water becomes warmer, boils and then becomes water vapor (steam), what happens to its kinetic and potential energies?(1 point)

Responses

The particles gain both potential and kinetic energy.
The particles gain both potential and kinetic energy.

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

The particles will gain potential energy as it heats up, but the kinetic energy of the particles will stay the same.
The particles will gain potential energy as it heats up, but the kinetic energy of the particles will stay the same.

The particles gain kinetic energy as it heats up, but the potential energy of the particles will stay the same.

The particles gain both potential and kinetic energy.