According to the Law of reflection, a light ray striking a mirror

bounces off the mirror at the same angle it hits.

continues moving through the mirror in the same direction

moves into the mirror at a slightly different angle

bounces off the mirror toward the direction it came from

Kim and her brother Kenny went for a swim while at the beach. While in the water, they saw a man jet skiing off in the distance. When Kim and Kenny were underwater searching for seashells, the sound of the Jet Ski seemed remarkably closer. What explanation describes why the Jet Ski seemed closer underwater? (SC.7.P.10.3)

Sound waves travel faster through liquids than through gases.

The Jet Ski moved closer to Kim and Kenny.

Kim and Kenny’s hearing was better underwater.

The frequency of the sound waves increased underwater.

Sonia tapped one end of a long wooden table. Sanjay and Marc listened for the sounds. Sanjay pressed his ear to the table. Marc did not. Sanjay heard the taps before Marc did. Why did Sanjay hear the sound before Marc? (SC.7.P.10.3)

Sound travels through wood and air at different speeds.

Particles of wood are farther apart than particles of air.

The frequency of the taps was different in wood and in air.

The taps only made the table vibrate; they did not make the air vibrate.

Marty and Jonas are spending the week at the beach. The ultraviolet rays on their skin are electromagnetic waves, and the ocean waves in which they swim are mechanical waves. What is the main difference between a mechanical wave and an electromagnetic wave? (SC.7.P.10.3)

Mechanical waves require a medium, and electromagnetic waves do not.

Electromagnetic waves transfer matter, and mechanical waves do not.

Mechanical waves transfer energy, and electromagnetic waves do not.

Electromagnetic waves have more energy than mechanical waves.

In which of the following mediums would mechanical waves be most likely to travel fastest? (SC.7.P.10.3)

they would travel the same speed in all these

Predict what would happen to the speed of a mechanical wave if it moved from a liquid to a solid. (SC.7.P.10.3)

Waves cannot travel through a solid

While attending a baseball game of his favorite major league team, Takahiro notices that he can see the batter hit the ball before he hears the crack of the bat. Which of the following statements best explains why there is a time lapse between seeing the baseball hit and hearing it? (SC.7.P.10.3)

Sound waves travel more slowly in the air than light waves do.

Eyes react to stimuli faster than ears do

Light waves travel in a more direct path than sound waves.

Sound waves from other sounds cause interference with sound waves from the bat.

Which best explains the relationship between the speed of sound and the medium through which it passes? (SC.7.P.10.3)

sound travels slower in air because of the increased distance between air particles

sound travels faster in solids because of the increased distance between solid particles

sounds travels faster in air because of the decreased distance between air particles

sound travels slower in solids because of the decreased distance between solid particles

How does the speed of SOUND in water compare to its speed in air? (SC.7.P.10.3)

The speed is faster because the molecules in water are closer to each other.

The speed is slower because the molecules in water are closer to each other.

The speed is the same because it is constant in all mediums

The speed cannot be compared without knowing the temperature.

Carmen has a clear glass plate and a solid plastic white plate. She holds both plates up to the sun. The plastic plate makes a shadow on the ground, but the glass plate does not. Which of the following correctly compares what happens with each type of plate? (SC.7.P.10.2)

The plastic reflects light; the glass allows it to pass straight through.

The plastic absorbs light; the glass reflects light.

The plastic bends the light around it; the glass absorbs light.

The plastic reflects light; the glass allows light to bend around it.

In figure 1 below is a chart of various index of refraction values for different mediums light passes through. Which explanation would best identify the relationship between each medium and how light behaves through it?

Light will bend the most when hitting a diamond.

Light will bend the most when passing through air.

Light will bend the least when hitting a diamond.

Light will bend the same when passing through an emerald from air.

Waves

Authored by Haley Nagle

Science

9th Grade

NGSS covered

Used 19+ times

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28 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What type of wave is this and what do the parts X represent?

Transverse; wavelength

Longitudinal; compression

Longitudinal; rarefraction

Transverse: compression

Longitudinal; wavelength

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following is true of sound waves?

They travel transversely and DO require a medium

They travel longitudinally and do NOT require a medium

They travel transversely and do NOT require a medium

They travel longitudinally and DO require a medium

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Distance from 'y' to 'y' is a _______

Wavelength

Amplitude

Compression

Rarefaction

What is represented by the blue lines?

Trough

Crest

Wavelength

Amplitude

What part is represented by the blue lines?

Wavelength; loudness

Amplitude; pitch

Wavelength; pitch

Amplitude; loudness

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What two factors effect the amount of energy a wave has?

Frequency and wavelength

Frequency and amplitude

Amplitude and rest

Wavelength and crest

Which wave in the diagram has the greatest frequency?

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Waves

What type of wave is this and what do the parts X represent?

Which of the following is true of sound waves?

Distance from 'y' to 'y' is a _______

What is represented by the blue lines?

What part is represented by the blue lines?

What two factors effect the amount of energy a wave has?

Which wave in the diagram has the greatest frequency?

Which wave in the diagram has the greatest wavelength?

Which wave has the greatest amplitude?

A blue tshirt looks blue because of the color blue on the shirt has been ______ back to our eyes.

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