Understanding Light: Straight Lines and Waves

What is demonstrated by using a laser and water mist in the first section?

• Light travels in curved paths.

• Light travels in straight lines.

• Light is invisible.

• Light changes color.

What is the purpose of using a thin wire in the second section?

• To show light's wave nature through diffraction.

• To block the laser completely.

• To demonstrate light's particle nature.

• To change the color of the laser.

What happens to light waves when they pass around the wire?

• They disappear.

• They create a shadow.

• They bend and interfere with each other.

• They change speed.

What causes the bright spot in the center of the interference pattern?

• Light absorption.

• Constructive interference.

• Light reflection.

• Destructive interference.

What is the key takeaway about light from the third section?

• Light travels faster in water.

• Light can be explained without waves.

• Light's behavior is best explained as a wave.

• Light is unaffected by obstacles.