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• A ball and a sheet of paper are dropped at the same time from the same height. What will occur if there is no resistance?
A. The ball will land first.
B. The paper will float slowly through the air.
C. The ball will float slowly through the air.
D. The ball and the paper will land at the same time.
• When a battery is charged, how do electrons move or travel?
A. It travels in three directions.
B. It travels in many directions.
C. It travels in different directions.
D. It travels in one direction in and out of the battery.
•Which of the following statements best described how sound energy is produced?
A. It is produced by making vibrations.
B. It is produced from muscles, wind, and machines.
C. It is produced from sunlight, magnets, and dry cell.
D. It is produced using electricity, generators, and batteries
• Why is sound energy used for taking images of babies inside the womb?
A. Sound is less harmful among others forms of energy.
B. Light energy will not pass through the mother’s skin and flesh.
C. The babies inside the womb can already hear sounds but cannot see yet.
D. Sound can be transmitted safely through human tissues and fluids and can be reflected to be used for imaging.
• Which of the following shows that chemical energy is changed to mechanical energy?
A. lighting of a candle
B. switching on of a flashlight
C. using sunlight to dry up clothes
D. an athlete run after drinking water
• Which best describes the energy transformation in the picture below?
A. Light energy is being transformed into heat energy.
B. Mechanical energy is being transformed into electrical energy.
C. Electrical energy is being transformed into light energy and heat energy.
D. Electrical energy is being transformed into heat energy and mechanical energy.
• Heat energy has many uses. Which of the following is NOT a use of thermal energy?
A. Thermal energy is used to cook food.
B. Thermal energy generates electricity.
C. Thermal energy is used for communication.
D. Thermal energy is used to warm the surroundings.
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