HCS SCI 04 Summer School Review 2

Rainbows show many colors in the sky, such as red, orange, yellow, green, blue, and violet. Why do these colors form in a rainbow?

• The number of colors depends on the weather.

• Rainbows happen when black and white light mix together.

• The colors are made when sunlight is bent and split into different wavelengths.

• More light makes more colors in the rainbow.

In which of the following materials does sound move at the greatest speed?

• A wooden plank

• Air in a balloon

• A tub of water

• Empty space

In a science experiment, students are testing how sound travels through different materials. They use a metal rod, a container of water, and a balloon filled with air. They strike a tuning fork and place it against each material. Based on the experiment, which statement correctly describes the relative speed of sound through these materials?

• Sound will travel slowest through the metal rod, faster through the water, and fastest through the air in the balloon.

• Sound will travel at the same speed through the metal rod, water, and air in the balloon.

• Sound will travel fastest through the metal rod, slower through the water, and slowest through the air in the balloon.

• Sound will travel slowest through the metal rod, faster through the air in the balloon, and fastest through the water.

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NGSS.MS-PS4-2

Which of the following is a way sound is used in everyday life at home or in the community?

• Using a lamp to brighten a room at night.

• Using an alarm clock to wake someone up in the morning.

• Using an air conditioner to cool a house during summer.

• Using a ruler to measure the length of a table.

A student made an observation about the refraction of light. They wanted to create a model of what they saw. What would be the best example of what their model should look like?

• A straw appearing bent in a glass of water.

• A person looking at their reflection in a mirror.

• A flashlight beam reflecting off a mirror.

• A flashlight shining light in a straight line.

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NGSS.MS-PS4-2

A student wears a white shirt. The shirt appears white because—

• All colors are absorbed

• All colors are reflected

• Only red light is reflected

• Only blue light is absorbed

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NGSS.MS-PS4-2

Which two statements are true about how light travels?

• Light does not need a medium to travel.

• Light travels in compression waves.

• Light travels in transverse waves.

• Light travels faster through solids than liquids.

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NGSS.MS-PS4-2

Which of the following statements best describes a difference between how light and sound travel?

• Sound can travel through a vacuum, while light requires a medium.

• Sound waves are transverse, while light waves are compressions.

• Light travels fastest in a vacuum, while sound travels fastest in solids.

• Both light and sound waves are produced by the vibration of particles.

What is being pictured?

• reflection

• refraction

• rainbow

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NGSS.MS-PS4-2

​​ ​ (a)   ​ is light bouncing off of an object..​ ​

• Reflection
• Refraction

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NGSS.MS-PS4-2