The Mystery of the Traveling Light

Read the passage 'The Mystery of the Traveling Light.' Who is the main character in the story?

• Lena

• Tom

• Sarah

• Mr. Green

Answer explanation

Lena is the main character in 'The Mystery of the Traveling Light.' The story revolves around her adventures and discoveries, making her the central figure in the narrative.

What is the term for light bouncing off smooth surfaces like mirrors?

• Reflection

• Absorption

• Diffraction

• Refraction

Answer explanation

The term for light bouncing off smooth surfaces, like mirrors, is 'Reflection'. This process occurs when light rays hit a surface and change direction, allowing us to see images in mirrors.

Tags

NGSS.MS-PS4-2

What does Amir say happens when light passes from air to water?

• light travels

• light bends

• light bounces

• light reflects

Answer explanation

Amir explains that when light passes from air to water, it slows down and bends, a phenomenon known as refraction. This change in speed causes the light to change direction.

Tags

NGSS.MS-PS4-2

Why did Lena see her shadow grow longer as the sun began to set?

• because light bends

• because light reflects off smooth surfaces

• because light bounces

• because light travels in a straight line and your body blocks it

Answer explanation

As the sun sets, its angle changes, causing shadows to elongate. Lena's shadow grew longer because the light source (the sun) was lower in the sky, resulting in a longer projection of her figure on the ground.

Tags

NGSS.5-ESS1-2

What did Lena realize when she turned on the flashlight?

Answer explanation

Lena realized that the flashlight illuminated her surroundings, revealing details she couldn't see in the dark, which likely helped her understand her environment better.

Tags

NGSS.MS-PS4-2

What is it called when light bounces off a mirror?

• Refraction

• Reflection

• Absorption

• Transmission

Answer explanation

When light bounces off a mirror, it is called reflection. This process occurs when light rays hit a surface and change direction, allowing us to see images in mirrors.

Tags

NGSS.MS-PS4-2

Why did Lena’s shadow grow longer?

• She was getting taller

• The sun was directly above her

• Light was bending

• The sun was setting

Answer explanation

Lena's shadow grew longer because the sun was setting. As the sun lowers in the sky, shadows lengthen due to the angle of the light, making this the correct choice.

Tags

NGSS.5-ESS1-2

What did Lena observe when she put a straw in water?

• It disappeared

• It caught fire

• It looked bent

• It turned into ice

Answer explanation

When Lena put a straw in water, it appeared bent due to the refraction of light. This optical illusion occurs because light changes speed as it passes from air into water, making the straw look distorted.

Fill in the Blank.

Light travels in _______ lines.

• straight

• curved

• zigzag

• circular

Answer explanation

Light travels in straight lines, which is a fundamental principle of optics. This means that when light moves through a medium, it does so in a direct path unless it encounters an obstacle or a different medium.

When light bends as it passes through water, it is called _______.

• refraction

• reflection

• diffusion

• absorption

Answer explanation

When light passes from air into water, it changes speed and direction, which is known as refraction. This bending of light is distinct from reflection, diffusion, or absorption, making 'refraction' the correct answer.

Tags

NGSS.MS-PS4-2