Astronomy Unit 2: Motions in Space

1.

Multiple Choice

1 min

1 pt

How long does it take Earth to revolve around the Sun one time?

1 day

1 year

1 month

27 days

2.

Multiple Choice

1 min

1 pt

How long does it take Earth to rotate on its axis one time?

1 day

1 year

1 month

27 days

3.

Multiple Choice

2 mins

1 pt

If the Sun is to the right of Earth in this picture, what season are we having in Michigan?

summer

fall

winter

spring

4.

Multiple Choice

1 min

1 pt

Where is Earth in its orbit at #1 in this picture?

perigee

apogee

perihelion

aphelion

5.

Multiple Choice

1 min

1 pt

Where is Earth in its orbit at #2 in its orbit in this picture?

perigee

apogee

perihelion

aphelion

6.

Multiple Choice

1 min

1 pt

During which month is Earth closest to the Sun?

January

March

July

November

7.

Multiple Choice

30 sec

1 pt

Which of the following has the most eccentric orbit around the Sun?

Mercury

Earth

Jupiter

Pluto

8.

Multiple Choice

1 min

1 pt

What shape do planets make as they orbit the Sun?

circle

ellipse

parallelogram

it depends on the planet

9.

Multiple Choice

1 min

1 pt

Where in the diagram is Earth moving the fastest?

from A to B

from X to Y

Earth moves around the Sun at a constant speed

10.

Multiple Choice

1 min

1 pt

Which of the following planets moves fastest around the Sun?

Venus

Earth

Jupiter

Neptune

11.

Multiple Choice

1 min

1 pt

The Sun is at one focus as the Earth orbits around it. What is at the other focus?

The Moon

Jupiter

Pluto

Nothing

12.

Multiple Choice

1 min

1 pt

What is barycenter?

The center of mass of an object.

Half of the major axis.

The center of mass between two objects that orbit each other.

Halfway between the Sun and the Earth.

13.

Multiple Choice

1 min

1 pt

What is the Sun revolving around?

The center of the Milky Way Galaxy

Andromeda

Nothing. It is not moving.

14.

Multiple Choice

2 mins

1 pt

Why do we have seasons?

Earth is closer to the Sun at certain times throughout the year.

The Moon is closer to Earth at certain times during the year.

Earth is tilted on its axis. When one hemisphere is getting more direct sunlight, that hemisphere is having summer.

Jupiter is tilted on its axis. When it is facing towards Earth more, we are having winter.

15.

Multiple Choice

2 mins

1 pt

Why do we have day and night?

Earth is spinning on its axis. When we are facing towards the Sun, we are experiencing day, and when we are facing away, we are having night.

Sometimes Earth is closer to the Sun and sometimes it is further away.

When you can see the Moon, it is night time, and when you can't, it's day time.

16.

Multiple Choice

45 sec

1 pt

Which planet is the only one in the Solar System to have a barycenter outside of the Sun?

Earth

Saturn

Jupiter

Neptune

17.

Multiple Choice

2 mins

1 pt

$\sqrt{30}$

3

3.11

5.48

10

18.

Multiple Choice

3 mins

1 pt

What is the cube root of 100?

4.64

10

300

1,000,000

19.

Multiple Choice

5 mins

1 pt

Kepler's Third Law states that p² = a³, when p is the orbital period (measured in Earth years) and a is the semimajor axis (measured in AU). If an unknown planet's orbital period (p value) is 5 Earth years, what is its semimajor axis (measured in AU)?

5

2.92

125

25

20.

Multiple Choice

2 mins

1 pt

Based on Kepler's Third Law, which of the following planets has the shortest orbital period?

Earth

Neptune

Jupiter

Venus

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