Quiz on light year 7

What type of wave is light?

• Transverse

• Longitudinal

• Surface

• Seismic

Can light waves travel through a vacuum?

• Yes

• No

• Only with a medium

• Only in air

What is the speed of light in air?

• 150,000 km/s

• 670 million miles per hour

• 3 x 10^8 m/s

• 340 m/s

What does a pinhole camera use to form an image?

• A lens

• A mirror

• A prism

• A pinhole

What causes shadows to form?

• Light bending around objects

• Light traveling in straight lines

• Dispersion of light

• Refraction of light

What happens during a total solar eclipse?

• The Sun is between the Earth and the Moon

• It occurs at night

• The Earth is between the Moon and the Sun

• The Moon is between the Earth and the Sun

What is a luminous object?

• An object that emits its own light

• An object that reflects light

• An object that only appears in light

• An object that absorbs light

What is the law of reflection?

• Angle of reflection is greater than angle of incidence

• Angle of incidence equals angle of reflection

• Angle of incidence is less than angle of reflection

• Angle of incidence equals angle of refraction

What does a periscope use to function?

• Filters

• Mirrors

• Prisms

• Lenses

What causes the splitting of white light into its colors?

• Reflection

• Refraction

• Dispersion

• Diffraction