S10 Properties of Energy

Which parameters influence the mechanical kinetic energy of an object?

• Its color

• Its mass

• Its height relative to the ground

• Acceleration due to gravity

• Its velocity

Which parameters influence the gravitational potential energy of an object?

• Its color

• Its mass

• Its height relative to the ground

• Acceleration due to gravity

• Its velocity

Two trains are traveling at the same velocity, but one has three times the mass of the other. How many times the mechanical kinetic energy of the lightest train does the heaviest train have?

• They both have the same

• 3 times

• 4 times

• 9 times

Two trains have the same mass, but one is going twice as fast as the other. How many times the mechanical kinetic energy of the slowest train does the fastest train have?

• They both have the same

• 2 times

• 3 times

• 4 times

You are biking to school and get tired along the way. If you reduce your velocity from 10 m/s to 5 m/s, by which factor is your mechanical kinetic energy changing?

• It remains the same

• It is multiplied by 4

• It is divided by 4

• We don't know

Two rock climbers of the same mass are climbing a cliff. One stops to rest at an anchor at 15 m. The other stops at an anchor at 30 m. Which one has the greater gravitational potential energy?

• The climber at 15 m

• The climber at 30 m

On the surface of the Moon, two astronauts jump straight up with the same amount of energy. Astronaut A has twice the mass of Astronaut B. If Astronaut A reaches a maximum height of 1 m off the ground, how high will Astronaut B go?

• Astronaut B will reach 0.5 m

• Astronaut B will reach 2 m

What is radiant energy?

• Energy of the random motion of the particles that make up a substance. When it is transferred, we refer to it as heat.

• Energy of electromagnetic waves radiating from an energy source, including light.

• Sound vibrations that travel through matter.

• Energy of the electrons moving along a conductor.

What is thermal energy?

• Energy of the random motion of the particles that make up a substance. When it is transferred, we refer to it as heat.

• Energy of electromagnetic waves radiating from an energy source, including light.

• Sound vibrations that travel through matter.

• Energy of the electrons moving along a conductor.

What is electrical kinetic energy?

• Electrical energy stored by a separation of positive and negative charges, such as in a battery.

• Energy of the electrons moving along a conductor.