Unit 7 Space Exploration

Front

What does the tidal range refer to?

Back

The difference between the levels of ocean water at high tide and low tide.

Front

How do uncrewed space missions contribute to the safety of future crewed missions?

Back

By testing technologies in space environments.

Front

Why is the moon's effect on the tides stronger than the sun's?

Back

Because the moon is closer to the Earth than the sun.

Front

What is the relationship between the frequency and wavelength of electromagnetic waves?

Back

Higher frequency waves have a shorter wavelength.

Front

What is the point called where an object is farthest from the sun in its orbit?

Back

Aphelion.

Front

What is the definition of perigee?

Back

The point in the orbit of an object where it is closest to the Earth.

Front

What is perihelion?

Back

The point in the orbit of an object where it is closest to the sun.

Front

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

Back

A solar eclipse occurs when the moon passes between the Earth and the sun, blocking the sun's light; a lunar eclipse occurs when the Earth passes between the sun and the moon, casting a shadow on the moon.

Front

What is the role of gravity in space exploration?

Back

Gravity is the force that keeps planets in orbit around the sun and affects the trajectory of spacecraft.

Front

What are the main components of a spacecraft?

Back

The main components include the structure, propulsion system, power supply, communication system, and life support system.