8th Science CBA 4 Review

This is a satellite view of the desert coast of Eqypt near the Red Sea. Scientists predict that the land at area X will be reduced by erosion. Which event will cause the most weathering and erosion to the land area at point X?

• Increasing salinity of seawater near the land

• Intense rays from the sun striking the land

• Solids floating in seawater depositing on the land

• Strong storm winds blowing across the land

Tags

TEK 8.9 C

Look at the two maps pf predicted weather conditions. Which answer choice best describes the weather at location X on Day 1 and Day 2?

• Day 1: warm and rainy

  Day 2: cool with more rain

• Day 1: warm and windy

  Day 2: cloudy and cold

• Day 1: clear and cool

  Day 2: warm and rainy

• Day 1: cold and rainy

  Day 2: clear and sunny

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TEK 8.10 B

PART 1 of 2: Which season is the Northern Hemisphere experiencing at Position C?

• Spring

• Summer

• Winter

• Fall

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TEK 8.7 A

Part 2 of 2: Which of the following BEST supports your answer to Part 1?

• The Northern Hemisphere is experiencing nighttime at Position C.

• The Earth is at its greatest distance from the Sun at Position C.

• The Northern Hemisphere is receiving direct sunlight at Position C.

• The Northern Hemisphere is tilted away from the Sun at Position C.

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TEK 8.7 A

Alpha Centauri appears as a bright object visible in the Milky Way galaxy. Alpha Centauri is actually a system of three objects. Each object produces light and rotates on its own axis. The system is an average of 4 light-years from Earth. What are the objects that make up the Alpha Centauri system?

• asteroids

• comets

• planets

• stars

Tags

TEK 8.8 A

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

Tags

8.10 C

TRUE or FALSE: Due to the Coriolis effect, ocean currents circulate clockwise in the northern hemisphere and counter-clockwise in the southern hemisphere

• TRUE

• FALSE

Tags

TEK 8.10 C

A Texas Gulf Coast energy pyramid is shown with representative organisms at each trophic level. Which statement best describes the flow of energy through this pyramid?

• The trophic level represented by catfish and gobies receives energy directly from the producers.

• The trophic level represented by shrimp and copepods receives energy directly from the tertiary consumers.

• The trophic level represented by redfish and flounder receives energy directly from the secondary consumers.

• The trophic level represented by wire grass and phytoplankton receives energy directly from the primary consumers.TEK 7.5 BTETEKT

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TEK 7.5 B

Which statement best explains why the sun appears brighter to people on Earth than any other star?

• Sunlight reaches Earth’s atmosphere at an angle that causes the sun’s light rays to intensify.

• Unique chemical reactions in the sun’s core produce a high-energy wavelength of light.

• The sun burns at a higher temperature than any other star.

• The sun is closer to Earth than any other star.

Tags

TEK 8.8 B

The picture above shows the Earth's orbit around the Sun and the Moon's orbit around Earth.

Imagine that the Sun suddenly disappeared from the solar system.

How would the Sun's disappearance affect the orbit of the Earth in the solar system?

Choose the TWO correct answers.

• Earth would no longer continue in its present orbit

• Gravity would pull the solar system toward the next closest star.

• Proxima Centauri would become our new Sun.

• The Sun's disappearance would remove the gravitational pull of the Sun on Earth

Tags

TEK 8.3 B