WorksheetsEnergy Unit Review Part 3
Total questions: 10
Worksheet time: 8mins
A basketball player shoots a basketball into the air at an arc. The ball goes through the basket and lands on the ground. At which point is the potential gravitational energy at its greatest?
when the basketball goes through the basket and hits the ground
when the basketball leaves the player's hands
when the basketball nears the top of its arc
when the basketball hits the ground
What type of simple machine is a shopping mall escalator (moving staircase) that transfers people from one floor to another?
inclined plane
lever
pulley
wheel
A camper uses a campfire to melt a marshmallow. Which form of energy produced by the burning wood in the campfire melts the camper's marshmallow?
chemical energy
electrical energy
heat energy
solar energy
Workers in a warehouse use inclined planes to load barrels in trucks. Which inclined plane would require the most effort applied by the workers?
The image shows three positions (W, X, and Y) of a pendulum during its motion. If the pendulum swings consistently according to the Law of Conservation of Energy, which statement is true?
Potential energy will be maximum at positions W and Y and minimum at X.
Kinetic energy will be maximum at positions W and Y and minimum at X.
Potential energy will be maximum at positions W and X and minimum at Y.
Kinetic energy will be maximum at positions W and X and minimum at Y.
What does the Law of Conservation of Energy state?
Energy can be created but not destroyed.
Energy cannot be created but can be destroyed.
Energy can be created and destroyed.
Energy cannot be created or destroyed.
What type of energy is stored in particles of food?
chemical
electrical
heat
solar
Water stored behind a dam eventually flows downward and powers generators that produce electricity. What type of energy is stored in the water behind the dam?
chemical energy
kinetic energy
potential energy
mechanical energy
A chef uses a mixer to make mashed potatoes. What energy transformation is taking place when the mixer is turned on and used to mash the potatoes?
chemical energy to kinetic energy
electrical energy to kinetic energy
kinetic energy to electrical energy
kinetic energy to chemical energy
Which arrangement correctly models an electromagnet?
