What is the relationship between a wave’s frequency and a wave’s wavelength?

The higher the frequency of a wave, the shorter its wavelength.

The shorter the frequency of a wave, the shorter the wavelength.

The longer the frequency of a wave, the longer its wavelength.

The higher the frequency of a wave, the higher its wavelength.

What causes refraction?

When light travels from air to water, it slows down, causing it to slightly change direction. The speed changes.

When light travels from air to water the light changes causing it to look different.

When a light wave breaks or has a glitch it causes a refraction.

When the color waves change as they go to the water it makes it appear different.

What would increase the strength of an electromagnet?

Increasing the amount of current flowing through the wire.

Inserting a wooden core inside the coil

Changing the direction of the current

Decreasing the number of coils of wire

How are electromagnets different from permanent magnets?

you can turn an electromagnet on/off

magnets have a North and South pole

What would happen if you took one end of the wire off the battery?

The nail would no longer be a magnet

A student places one magnet above another magnet as shown below. Why does the top magnet seem to float above the bottom magnet?

The like poles of each magnet repel each other.

The magnets are made of different materials.

The opposite poles of each magnet repel each other.

The magnets have different gravitational attractions.

Two objects of the same mass are placed at the distance shown. Which pair has the greatest gravitational force between them?

They have the same gravitational force

There is no gravitational force between them

Which statement best describes the direction of force shown by the magnetic field lines around a bar magnet?

From the magnet's north pole to its south pole

Away from both the magnet's north and south poles

From the magnet's south pole to its north pole

Why does it take much less space to store digital information than analog information?

Digital devices only record pieces of sound waves, not full waves

Digital devices record sounds at lower volumes than analog devices

Digital devices decrease the amplitudes of sound waves, making them smaller

Digital devices automatically eliminate all background noise from the sounds they record

This graph demonstrates an object that is -

Moving away from the start at a constant speed

Increasing speed away from the start

Decreasing speed toward the start

Moving toward the start at a constant speed

Use the image to identify the motion of the object relative to Earth. Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.

It is moving away from Earth (Redshift)

It is moving towards Earth (Blueshift)

It is moving towards Earth (Redshift)

Q2 8th Grade Science Benchmark Review

Authored by ASHLEY CARR

Science

8th Grade

NGSS covered

Used 19+ times

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Content View

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47 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the total force and direction?

50N to the right

350N to the right

50N to the left

The cart doesn't move

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is a Longitudinal Wave?

A wave that vibrates the medium in the same direction in which the wave travels

A wave that vibrates the medium at right angles, or perpendicular to the direction that the wave travels.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A wagon has a force of 5 Newtons pushing it east and a force of 5 Newtons pushing it west. What happens to the wagon?

It does not move.

It moves north.

It moves south.

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

True or false? In space sound travels and light does not.

True

False

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is number one in the wave diagram?

wavelength

amplitude

crest

trough

Tags

NGSS.MS-PS4-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is number two in the wave diagram?

wavelength

amplitude

crest

trough

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is number three in the wave diagram?

Wavelength

amplitude

crest

trough

Tags

NGSS.MS-PS4-1

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Q2 8th Grade Science Benchmark Review

What is the total force and direction?

What is a Longitudinal Wave?

A wagon has a force of 5 Newtons pushing it east and a force of 5 Newtons pushing it west. What happens to the wagon?

True or false? In space sound travels and light does not.

What is number one in the wave diagram?

What is number two in the wave diagram?

What is number three in the wave diagram?

A force of 90N is applied to each cart below, which one will accelerate the fastest?

What is the relationship between a wave’s frequency and a wave’s wavelength?

What causes refraction?

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