Answers SY2025-26 - 2002040 MJ Comprehensive Science 1 Sem 1 CRUnit Test

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The north pole of a bar magnet is moved close to the north pole of a second bar magnet. What prediction best describes how the first magnet responds when it is released?

It will move toward the second magnet because like poles repel.

It will move toward the second magnet because like poles attract.

It will move away from the second magnet because like poles repel.

It will move away from the second magnet because like poles attract.

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The total energy in a system is 675 J. The kinetic energy changes from 296 J to 432 J. Which statement best describes the potential energy of this system?

It changes from 296 J to 432 J.

It changes from 379 J to 243 J.

It changes from 432 J to 296 J.

It changes from 243 J to 379 J.

What must happen for most areas on Earth to experience all four seasons?

The Sun must reach its highest point in the sky.

The Northern Hemisphere must experience winter.

The axis must be tilted at a certain angle that remains unchanged.

The north end of Earth’s axis must always point away from the Sun.

What must be included when describing the displacement of an object?

measurement and direction

direction and speed

total distance and position

speed and total distance

Otis is making a poster about how to preserve sand along the beach. Which of the following suggestions should Otis include on his poster?

Build a seawall near the coastline.

Put sandbags along the coastline.

Build a fence along the coastline.

Plant more grass near the coastline.

Which process contributes to the formation of tornados?

Water droplets freeze, giving off energy.

The storm begins to rotate around a central eye.

The Coriolis effect creates the spin of the storm.

Warm air rises, resulting in a decrease in air pressure.

In December, a city in the Southern Hemisphere has warm weather all month long.What causes this to happen?

The city experiences fewer hours of daylight.

The city is experiencing a winter solstice.

There is a high concentration of the Sun’s rays in that region.

The Sun reaches its highest point in the sky during this month.

Which statement describes Florida?

Florida is an island made of limestone.

Florida is an island made of shale.

Florida is a peninsula made of limestone.

Florida is a peninsula made of shale.

southern tropicsnorthern tropicsnorthern temperate zonesouthern temperate zone

southern tropics

northern tropics

northern temperate zone

southern temperate zone

Which is part of the process in the formation of hail pellets?

They are tossed up and down in clouds.

They lose layers of ice and grow smaller.

They grow to less than 5 mm in diameter.

They form ice crystals directly from water vapor.

Which describes the two ways that energy is measured?

in convection and in temperature

in temperature and in radiation

in radiation and in convection

in wavelength and in temperature

Which example would most likely decrease friction?

using cleats, rather than gym shoes, on a field

using shaving cream, rather than shaving on dry skin

using a wide parachute, rather than a narrow parachute, when skydiving

using sandpaper, rather than regular paper, on wood

Which correctly list the three gases that each make up less than 1 percent of Earth’s atmosphere?

argon, water vapor, carbon dioxide

oxygen, argon, water vapor

nitrogen, oxygen, carbon dioxide

carbon dioxide, oxygen, argon

What is 0.000345 expressed in scientific notation?

3.45 × 102

3.45 × 104

3.45 × 10–2

3.45 × 10–4

The table shows results of an experiment that was replicated.

They are precise and reproducible.

They are precise but not reproducible.

They are accurate and reproducible.

They are accurate but not reproducible.

Sara was caught in a thunderstorm while outdoors. She immediately makes sure that she is not near any tall structures or trees. What is Sara most likely trying to avoid?

being struck by lightning

being hit by thunder

being caught by falling hail

being carried away by strong winds

What percentage of light hits Earth’s surface directly?

3 percent

5 percent

31 percent

47 percent

Tyler and his family drove from Atlanta to Baltimore. They traveled a total of 678 miles over 2 days.What is the reference point in this scenario?

Atlanta

Baltimore

678 miles

2 days

The diagram shows organisms a diver observed during an ocean dive.

the ocean surface

the ocean floor

the position of the clownfish

the position of the seaweed

Which causes a sea breeze?

Air temperatures are cooler than normal.

Air flows from the poles toward the equator.

Air blows over long distances at different speeds.

Air above land warms quicker than air over water.

Which belt is a global wind belt found in the middle latitudes?

doldrums

jet streams

trade winds

prevailing westerlies

Oran wants to model the behavior of Earth’s magnetic field when Earth’s magnetic south is near Earth’s geographic north using a ball, a bar magnet, and a compass. He designates the top of the ball as Earth’s geographic north.

Model 1

Model 2

Model 3

Model 4

Which statement accurately describes the relationship between air pressure, air density, or altitude?

As altitude increases, pressure increases.

As altitude increases, air density increases.

Air pressure and density are lowest at sea level.

Denser air exerts more pressure than less dense air.

Which statement best describes monsoons?

They force cool, moist air from oceans to rise.

They are winds that blow in the opposite direction of a normal wind.

They bring heavy rain in the winter and in the summer.

They influence precipitation as wind moves near a mountain.

A scientist on Earth drops a hammer and a feather at the same time an astronaut on the moon drops a hammer and a feather.

The hammer hits the ground before the feather on both Earth and the moon.

The hammer hits the ground before the feather on Earth, but the feather hits the ground first on the moon.

The hammer and the feather hit the ground together on both Earth and the moon.

The hammer hits the ground before the feather on Earth, and the hammer and feather hit at the same time on the moon.

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