U1L2 Quiz: Energy Causes Change

Which of the following scenarios best illustrates the conversion of kinetic energy into gravitational potential energy?

• A. a ball being thrown upward into the air

• B. a ball rolling down a ramp

• C. a cyclist coasting down a hill

• D. a skydiver falling toward the ground

Which of the following best describes the formula for total mechanical energy?

• A. the sum of kinetic energy and potential energy

• B. the difference between kinetic energy and potential energy

• C. the product of kinetic energy and potential energy

• D. the ratio of kinetic energy to potential energy

The diagram shows the curved path of a thrown ball. At which point does the ball have the least amount of gravitational potential energy?

• A. point W

• B. point X

• C. point Y

• D. point Z

Which of these objects is moving and therefore has the most kinetic energy?

• A. a 10 kg rock resting on the ground

• B. a 60 kg person jogging in the park

• C. a 1,000 kg boat tied to a dock

• D. a 20 kg suitcase sitting in a closet

The diagram shows a swinging pendulum. As the pendulum moves, its energy changes form. Three positions during the swing are labeled as Position 1, Position 2, and Position 3. At which position does the pendulum have the greatest amount of potential energy?

• A. Position 1

• B. Position 2

• C. Position 3

• D. The potential energy is the same at all positions.

Which action would cause the greatest increase in the kinetic energy of a car?

• A. decreasing its mass by half

• B. increasing its speed by half

• C. doubling its mass

• D. tripling its speed

How much work is done when a person pushes a box with 15 N of force for a distance of 6 m? (W=Fd)

• 90 Nm

• 21 Nm

• 45 Nm

• 10 Nm

Which scenario best shows energy being passed from one object to another?

• A. a moving car bumping into a parked car

• B. a flower blooming in spring

• C. a pencil lying on a desk

• D. ice melting in a warm room

Which of the following is the correct definition of energy?

• A) The process of transferring heat

• B) The ability to do work or produce change

• C) The amount of matter in an object

• D) The resistance to motion

Which statement best describes the principle of conservation of energy?

• A) Energy can disappear completely

• B) Energy can change forms but the total amount remains constant

• C) Energy is only found in non-living things

• D) Energy is always increasing in the universe