Practice Test

Please solve the following questions. This is not a real exam, it will not be graded, and you do not need to submit your solutions to anyone. The questions are simply intended to help you practice for the real exam.

These questions will not appear in the exam itself. Students who don't genuinely attempt to solve the questions on their own, and only memorize the solutions, will have a very hard time in the actual exam!

This sample exam is online, but the real exam will be given in person, at a time and place indicated on the course website.

THIS IS NOT THE ACTUAL EXAM!
THIS IS JUST A PRACTICE EXAM!
THE REAL EXAM IS IN PERSON!

If you need any clarifications for these questions, you can ask for them on the course Teams channel.

Question 1

The inner planets are...

Mercury and Venus.
Mercury, Venus, Earth, and Mars.
Jupiter, Saturn, Uranus, and Neptune.

Question 2

Is the smallest planet in the solar system also the least massive?

Yes.
No.
Depends how the size is measured.

Question 3

So far, spacecraft sent by humans have explored...

Only planets and moons.
Only planets.
The Sun, planets, moons, asteroids, and comets.

Question 4

When should we expect the most sunspots?

During a solar minimum.
Halfway between a solar maximum and minimum.
During a solar maximum.

Question 5

Which of the following layers of the Sun is the highest?

The corona.
The photosphere.
The chromosphere.

Question 6

When was planet Earth created?

Several million years ago.
Several billion years ago.
Several thousand years ago.

Question 7

Which planets in the solar system do not have moons?

Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Jupiter, Saturn, Uranus, and Neptune.
Mercury and Venus.

Question 8

Which planets in the solar system do not have rings?

Jupiter and Saturn.
Mercury, Venus, Earth, and Mars.
Jupiter, Saturn, Uranus, and Neptune.

Question 9

What are Trans-Neptunian objects?

Planet-like objects beyond the orbit of Neptune.
Planet-like objects similar to Neptune.
Another name for dwarf planets.

Question 10

Which planet has the largest orbital eccentricity?

Mars.
Mercury.
Venus.

Question 11

The first astronauts to walk on the Moon were from...

Apollo 11
Apollo 10
Apollo 17

Question 12

What was the purpose of the MESSENGER mission?

To explore Mercury.
To explore Venus.
To explore Mars.

Question 13

Which state of matter is the Sun in?

Solid.
Plasma.
Liquid.

Question 14

What was the purpose of the DART mission?

To change the path of a moon that was a dangerous threat to Earth.
To change the path of an asteroid that was a dangerous threat to Earth.
To change the path of an asteroid that was not a threat to Earth.

Question 15

I have 800 g of a radioactive material with a half-life of 4 months. How much mass will remain from the original material after 1 year?

700 g.
200 g.
100 g.

Question 16

How close to the Sun will the Parker Solar Probe get?

43.5 million km.
0.7 million km.
7 million km.

Question 17

I have 800 g of a radioactive material with a half-life of 6 months. How much mass will remain from the original material after 1 year?

700 g.
100 g.
200 g.

Question 18

Which of the following planets has been explored the most by spacecraft?

Jupiter.
Mars.
Neptune.

Question 19

Is the most dense planet in the solar system also the most massive?

Depends how the mass is measured.
Yes.
No.

Question 20

What was the purpose of the Galileo mission?

To explore Saturn.
To explore Jupiter.
To explore Neptune.

Question 21

How is a dwarf planet defined by the IAU?

An object that is in direct orbit around the Sun and rounded by its own gravity, but does not clear its neighborhood.
An object that is in direct orbit around the Sun, rounded by its own gravity, and clears its neighborhood.
An object that is in direct orbit around the Sun, but not rounded by its own gravity and does not clears its neighborhood.

Question 22

The giant planets are...

Jupiter, Saturn, Uranus, and Neptune.
Mercury, Venus, Earth, and Mars.
Uranus and Neptune.

Question 23

What is the fastest human-made spacecraft?

Juno.
The Parker Solar Probe.
DART.

Question 24

What is the purpose of the planned Artemis III mission?

A crewed mission to fly to the Moon and land on it.
An uncrewed mission to fly to the Moon but not land on it.
A crewed mission to fly to the Moon but not land on it.

Question 25

Where in the solar system have humans visited in person?

Only Earth.
Earth and the Moon.
Earth, the Moon, and Mars.