9sci light waves lesson 1

What type of wave is light?

• Longitudinal wave

• Sound wave

• Transverse wave

• Compression wave

Which statement about light is true?

• Light MUST HAVE a medium to travel

• Light travels in a curved path

• Light is a type of electromagnetic wave

• Light moves slower than sound in air

What is the speed of light in a vacuum?

• 3,000 m/s

• 30,000 m/s

• 300,000,000 m/s

• 3,000,000,000 m/s

Which of the following waves is NOT part of the electromagnetic spectrum (light spectrum)?

• X-rays

• Sound waves

• Microwaves

• Radio waves

How does light travel in a uniform medium?

• In wavy lines

• In straight lines

• In spirals

• In random directions

What is a "ray" in terms of light?

• A group of light waves

• The path light takes

• A reflection of light

• Light that is scattered

Why can we see beams of light in foggy conditions?

• The fog creates light

• The light is scattered by small particles

• Fog absorbs the light

• Beams of light cannot be seen in fog

Which type of material allows ALL/MOST light to pass through without being scattered?

• Opaque

• Translucent

• Transparent

• Reflective

What happens when light is scattered?

• It moves in all directions

• It disappears completely

• It is absorbed

• It moves in a straight path

Which is an example of a luminous object?

• The Moon

• A mirror

• A lightbulb that is turned on

• A tree