What is kinetic energy?(1 point)
Responses
the energy of motion
the energy of motion
thermal energy
thermal energy
stored energy
stored energy
the energy of radiation
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, 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 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, 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 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 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.
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 be moving faster on average.
Which object will have particles with the highest average kinetic energy?(1 point)
Responses
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
an iceberg at 0°C
an iceberg at 0°C
water at 37°C in a glass
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 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.
The particles will gain potential energy, but the kinetic energy of the particles will stay the same
The particles can gain potential and kinetic energy.
What is kinetic energy?(1 point)
Responses
stored energy
stored energy
thermal energy
thermal energy
the energy of radiation
the energy of radiation
the energy of motion