Study for Space Test

What can be concluded from the data in the table?

• A. As the distance from the Sun decreases, the planet diameter increases.

• B. As the distance from the Sun increases, the planet diameter increases.

• C. As the distance from the Sun decreases, the orbital velocity increases.

• D. As the distance from the Sun increases, the orbital velocity increases.

Which arrangement of the Sun, Earth, and Moon would produce the highest high-tides and the lowest low-tides on Earth?

• A

• B

• C

• D

What tool helps scientists determine the chemical composition of distant stars?

• microscope

• optical telescope

• space probe

• spectroscope

How would the gravitational force between the Earth and the Moon change if the Moon was twice as far away?

• The force would increase.

• The force would be the same.

• The force would decrease.

• The force would disappear.

Why does the Moon’s gravity have a greater effect on Earth’s tides compared to the Sun’s gravity?

• The Sun is composed of mostly light gases such as hydrogen and helium.

• The Sun’s gravity only affects planetary orbits.

• The Moon is much closer to Earth than the Sun.

• The Moon is much less dense than the Sun.

The data in the table shows the masses and weights of two different objects on the surface of four different planets. What planet has the largest gravitational force?

• Planet W

• Planet X

• Planet Y

• Planet Z

What is the major advantage of space-based telescopes (such as the Hubble Space Telescope) over Earth-based telescopes?

• They are millions of miles closer to the subject.

• They are less expensive to build and maintain.

• They are above the Earth's atmosphere which can cause distortions.

• They are affected less by the gravity of the Earth and the Moon.

At which position will the planet be moving the fastest?

• planet position 1

• planet position 2

• planet position 3

• planet position 4

An astronomer wants to analyze the composition of a distant star. What is the best tool the astronomer can use?

• satellite

• space probe

• spectroscope

• telescope

The image shows the Moon in four different positions around Earth as viewed from space. Which positions of the Moon will correspond to spring tides?

• positions 1 and 2

• positions 1 and 3

• positions 2 and 3

• positions 2 and 4