8th grade Science 4th Six Weeks Exam 2024-25

Which statement best explains why areas around the equator have daytime highs that vary little during the year?

• The angle of the sun’s energy hitting that area of the Earth stays the same.

• The water surrounding these areas moderates the temperature of the land.

• The density of the vegetation causes the temperature to remain steady.

• The unique soil composition causes heat to be retained for long periods of time.

Tornadoes are a common problem in many parts of Texas and Oklahoma. Which of these is most likely used to study tornadoes?

• meter sticks

• barometers

• telescopes

• magnets

Where do warm ocean currents originate?

• near the poles

• near the equator

• near continents

• near the middle of oceans

Hurricanes are powerful tropical storms that develop over warm ocean water. Hurricanes draw their energy from the ocean and weaken as they move over land. Which of the following BEST explains how energy is transferred from the ocean to a hurricane?

• Evaporating water adds heat to the atmosphere.

• Rising tides change the level of the ocean surface.

• Waves cause turbulence in the lower atmosphere.

• Currents carry warm water along the ocean surface.

The southeastern region of Texas has mild temperatures with relatively small changes in temperature between daytime and nighttime. Which of these is most responsible for keeping the daily temperature range small?

• daily high wind speeds

• slow moving cool fronts

• heat from deserts

• moisture from coastal waters

The direction that an ocean current travels can be altered by the movement of the Earth's rotation on its axis. This is known as the —

• revolution theory

• water cycle

• climate

• Coriolis effect

During the daytime on area coastlines, the temperature of the air over the land is warmer than the temperature of the air over the water. However, during the nighttime, the situation is reversed and the air over the water is warmer than the air over the land. This most commonly creates---

• sand storms

• hurricanes

• sea breezes and land breezes

• tornadoes

Based on the weather map shown, the current conditions in Colorado are likely _____________.

• cold and wet

• cold and dry

• warm and wet

• warm and dry

The weather map shows the weather for one day in the United States. Which of the following cities could most likely expect to see a rise in their temperatures in the next couple of days?

• A. Seattle, because a warm front should move through.

• B. Miami, because a cold front should move through.

• C. Dallas, because the High Pressure will trap the heat.

• D. Washington, because the rain will trap the heat under the rain.

What does the blue line with triangles represent on the weather map?

• High pressure front

• Low pressure front

• Cold front

• Warm front