Energy and Kinetic Energy Quiz

James is playing on a swing in the park. At which point in his swing does he have maximum kinetic energy?

• At the highest point on either side

• At the lowest point in the swing

• In the middle of the swing

• When he is at rest

When Luna drops a ball from the top of a hill to the bottom, assuming no energy loss, what happens to the total energy in the system?

• Energy decreases

• Energy increases

• Energy remains constant

• Energy fluctuates

Ethan compresses a spring in a toy car and then releases it. Which form of energy is most relevant when the spring is compressed?

• Gravitational potential energy

• Kinetic energy

• Elastic potential energy

• Thermal energy

Abigail is observing a basketball as it bounces on the court. To model the energy transformation in the bouncing ball, which combination of energies would she consider?

• Kinetic and potential energy

• Kinetic and thermal energy

• Gravitational and chemical energy

• Kinetic and electrical energy

Daniel is riding his bike, and he decides to carry a backpack that doubles his total mass. If his speed remains constant, how does the kinetic energy change?

• It doubles

• It quadruples

• It remains the same

• It is halved

Emma is riding her bicycle, and the total mass of Emma and the bicycle is 5 kg. If she is moving at a speed of 10 m/s, what is her kinetic energy?

• 50 Joules

• 250 Joules

• 500 Joules

• 1000 Joules

Arjun is lifting a box to place it on a higher shelf. What happens to the gravitational potential energy of the box as he raises it higher?

• The potential energy decreases

• The potential energy increases

• The potential energy stays the same

• The kinetic energy increases

Charlotte and Liam are working on a project to understand how energy flows in a system that involves both thermal and mechanical energy. How should they model this energy flow?

• Using only kinetic energy equations

• By applying both KE=12mv2KE = \frac{1}{2}mv^2KE=21mv2 and PE=mghPE = mghPE=mgh

• Using a diagram that shows heat transfer and motion

• Using a simulation that only accounts for heat

During a science experiment, Benjamin observes that when he places a hot cup of coffee in a cooler room, the heat from the coffee spreads out into the room. This observation is an example of:

• Energy is always conserved

• Energy can only be transferred from colder to hotter objects

• The total energy in a closed system remains constant

• Energy spreads out from areas of high concentration to low concentration

Emma is curious about how her thermos keeps her coffee hot for hours. Why does a thermos slow down the transfer of heat?

• It reduces the total thermal energy in the system

• It traps air to reduce heat conduction

• It increases the heat transfer rate

• It absorbs heat from the surroundings