Earth & Space Science Semester 1 Final Exam

Front

What is a mid-ocean ridge?

Back

A mid-ocean ridge is an underwater mountain range formed by plate tectonics, where tectonic plates are moving apart.

Front

What occurs during a lunar eclipse?

Back

A lunar eclipse occurs when Earth is positioned directly between the Sun and the Moon, blocking sunlight from reaching the Moon.

Front

What happens to the Moon during its lunar cycle?

Back

The Moon goes through phases of waxing (growing) and waning (shrinking) as it orbits Earth.

Front

What percentage of Earth's water is salt water?

Back

97% of Earth's water is salt water, primarily found in oceans.

Front

Why did the theory about the Sun's motion change?

Back

The theory changed because new technology and research allowed scientists to reevaluate the conclusions drawn from earlier observations.

Front

What is the difference between a solar eclipse and a lunar eclipse?

Back

A solar eclipse occurs when the Moon is between the Sun and Earth, blocking sunlight from reaching Earth, while a lunar eclipse occurs when Earth is between the Sun and the Moon.

Front

What is the significance of the Earth's tilt?

Back

The tilt of Earth's axis (about 23.5 degrees) is responsible for the changing seasons as Earth orbits the Sun.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of Earth's lithosphere that move and interact at their boundaries, causing geological activity.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth, including processes like evaporation, condensation, and precipitation.

Front

What is the role of gravity in the solar system?

Back

Gravity is the force that keeps planets in orbit around the Sun and governs the motion of celestial bodies.