Final Exam

What is the process called when light bounces off objects into our eyes, allowing us to see them?

• A) Transmission

• B) Reflection

• C) Refraction

• D) Absorption

Answer explanation

Reflection is the process when light bounces off objects into our eyes, allowing us to see them.

Tags

NGSS.MS-PS4-2

What happens to light when it hits uneven or rough surfaces?

• A) It is completely absorbed

• B) It bounces off in many directions

• C) It passes through unchanged

• D) It becomes brighter

Answer explanation

When light hits uneven or rough surfaces, it bounces off in many directions, leading to diffuse reflection.

Tags

NGSS.MS-PS4-2

What happens to light when it hits a mirror?

• It is absorbed by the mirror.

• It passes through the mirror.

• It bounces back off the mirror.

• It is scattered in all directions.

Answer explanation

When light hits a mirror, it bounces back off the mirror. This is known as reflection.

Tags

NGSS.MS-PS4-2

Why do you only see your face when looking directly into a mirror?

• Because the mirror absorbs light from your face.

• Because the mirror is painted with reflective paint.

• Because the mirror reflects light back in just one direction.

• Because the mirror is curved.

Answer explanation

Because the mirror reflects light back in just one direction.

Tags

NGSS.MS-PS4-2

What happens when light from a source like a lamp hits an object such as an apple?

• The light is absorbed completely by the apple.

• The light passes through the apple.

• The light bounces off the apple.

• The light makes the apple invisible.

Answer explanation

The light bounces off the apple.

Tags

NGSS.MS-PS4-2

What does reflected light allow us to do?

• Hear sounds

• Feel textures

• See the world around us

• Taste flavors

Answer explanation

Reflected light allows us to see the world around us, enabling vision and perception of our surroundings.

Tags

NGSS.4-PS4-2

What determines the luminance or brightness of light?

• The color of the light

• The weight of the light

• The amplitude or magnitude of the waves

• The speed of the light

Answer explanation

The amplitude or magnitude of the waves determines the luminance or brightness of light.

Tags

NGSS.MS-PS4-1

Approximately how long does it take for light to travel from the Sun to Earth?

• 8 seconds

• 8 hours

• 8 days

• 8 minutes

Answer explanation

The correct answer is 8 minutes because it takes approximately 8 minutes for light to travel from the Sun to Earth.

What is the term used to describe the bouncing of light off an object?

• Refraction

• Diffusion

• Reflection

• Transmission

Answer explanation

The term used to describe the bouncing of light off an object is 'Reflection'.

Tags

NGSS.MS-PS4-2

How does light travel from the Sun to Earth?

• Through a series of chemical reactions

• Through an ocean of water

• Through the near vacuum of space

• Through solid materials

Answer explanation

Light travels from the Sun to Earth through the near vacuum of space, as there is no medium for it to pass through solid materials or an ocean of water.

Tags

NGSS.MS-PS4-2