6th Grade Energy Quiz
Questions: 16 · 10 minutes
1. What is the main energy transformation performed by a solar panel that supplies electricity?
Electrical energy into light energy
Light energy into electrical energy
Sound energy into electrical energy
Chemical energy into thermal energy
2. When an electric lamp is switched on, which energy transformation best describes what happens?
Electrical energy changes into light and thermal energy.
Thermal energy changes into stored chemical energy.
Light energy changes entirely into electrical energy.
Gravitational potential energy changes into sound energy.
3. Which statement expresses the law of conservation of energy?
Every energy transformation produces more energy than was present before.
Energy disappears whenever friction slows an object.
Only moving objects contain energy.
Energy cannot be created or destroyed, but it can be transferred or transformed.
4. Two cups contain the same substance and are at the same temperature. What does their equal temperature indicate about their particles?
They contain exactly the same number of particles.
Their particles have stopped moving.
Their particles have the same average kinetic energy.
They must contain the same total amount of thermal energy.
5. In a flashlight, which energy transformation begins in the battery when the circuit is completed?
Chemical energy changes into electrical energy.
Light energy changes directly into gravitational energy.
Sound energy changes into chemical energy.
Thermal energy changes entirely into kinetic energy.
6. What form of energy is stored in food and released through processes in the body?
Nuclear energy
Sound energy
Gravitational energy
Chemical energy
7. A ball bounces lower each time it hits the floor. What happens to some of its mechanical energy?
It is destroyed because the ball loses height.
It is transformed mainly into thermal and sound energy.
It becomes additional gravitational energy in the floor.
It remains entirely as kinetic energy inside the ball.
8. A student rubs their hands together quickly, and the hands become warmer. Which transformation is occurring?
Thermal energy is being changed into chemical energy.
Mechanical energy is being transformed into thermal energy through friction.
Light energy is being changed into kinetic energy.
Gravitational potential energy is being transformed into electrical energy.
9. Which statement best describes kinetic energy?
It is energy transferred only through electrical wires.
It is energy stored because of an object's position.
It is energy stored in the bonds of a substance.
It is the energy an object has because it is moving.
10. An alarm rings inside a sealed container. If all the air could be removed from the container, why would the sound outside become much harder to detect?
Sound changes into gravitational potential energy in empty space.
Sound can travel only through liquids and solids.
Sound waves need matter through which to travel.
Removing air causes all vibrations to become light.
11. A metal spoon and a wooden spoon are left in hot soup. The metal handle soon feels warmer. What best explains this?
Metal conducts thermal energy more effectively than wood.
Wood transfers thermal energy faster than metal.
Metal creates more energy than wood does.
The metal spoon absorbs cold energy from the room.
12. A student wants to keep an ice cube from melting for as long as possible. Which container would work best?
A thin metal cup with no lid
A clear glass bowl placed in sunlight
A metal tray near a warm window
A closed foam container with thick insulating walls
13. A swinging pendulum reaches its highest point on one side. At that instant, which description is most accurate?
Its kinetic energy is greatest, and its gravitational potential energy is least.
Its kinetic and gravitational potential energies have both disappeared.
Its gravitational potential energy is greatest, and its kinetic energy is smallest.
Its thermal energy has been completely transformed into sound energy.
14. A warm mug is placed on a cool countertop. In which direction does thermal energy naturally transfer?
Equally in both directions with no net transfer
From the cooler countertop into the warmer mug only
From the warmer mug to the cooler countertop and surrounding air
Nowhere, because objects must touch a flame to transfer thermal energy
15. Two identical books are resting on shelves. Which book has more gravitational potential energy relative to the floor?
The book on the lower shelf, because it is closer to Earth
The book on the higher shelf, because it is farther above the floor
Both books, because resting objects cannot have potential energy
Both books, because height does not affect gravitational potential energy
16. A roller coaster car moves down a hill without an engine. Ignoring friction, where does it have the greatest kinetic energy?
At the bottom, where its speed is greatest
Halfway down, because potential and kinetic energy must be equal there
At every point, because its total energy stays constant
At the top, before it begins moving downward