Position and Motion 3

Why are lamps commonly used in homes?

• A. To cool the room.

• B. To produce sound.

• C. To provide illumination.

• D. To generate heat.

In what way do stars contribute to our night sky?

• A. They absorb light from the moon.

• B. They reflect light from the Earth.

• C. They emit light due to nuclear reactions in their cores.

• D. They generate light through friction.

How do stars provide light?

• A. By reflecting light from the moon.

• B. By burning gases and releasing energy as light.

• C. By absorbing light from other stars.

• D. By emitting sound waves that convert to light.

What distinguishes a flashlight from other light sources?

• A. It uses fire to produce light.

• B. It operates on battery power to produce light.

• C. It reflects light from the sun.

• D. It absorbs light from the surroundings.

Which item is not typically used to produce light?

• A. Candle

• B. Sun

• C. Wind

• D. Bulb

What role does light play in our ability to see objects?

• A. It absorbs colors from objects.

• B. It allows us to hear sounds more clearly.

• C. It enables us to perceive and interpret visual information.

• D. It creates a cooling effect on objects.

What is an essential property of light?

• A. It can create darkness.

• B. It can generate sound.

• C. It can brighten areas and aid in vision.

• D. It can absorb colors.

Which of the following is a natural source of light?

• A. LED bulb

• B. Neon sign

• C. Fireflies

• D. Street lamp

What is a unique feature of fireflies in producing light?

• A. They use solar energy.

• B. They emit light through a biological process called bioluminescence.

• C. They reflect light from other sources.

• D. They generate light through mechanical means.

How do lamps typically produce light?

• A. By burning wood.

• B. By using electrical energy to heat a filament or activate a gas.

• C. By reflecting sunlight.

• D. By emitting sound waves.