Test 1

Question 0

Solar system

Answer 0

Consists of the sun and the planets etc that orbit it

Question 1

Equation for the speed of light

Answer 1

Time = distance/speed of light

Question 2

Local group

Answer 2

Cluster of galaxies that our Milky Way belongs to

Question 3

Milky Way

Answer 3

Galaxy made up of stars and star clusters that our solar system belongs to

Question 4

Local supercluster

Answer 4

Cluster of galaxy clusters

Question 5

Kuiper belt

Answer 5

Region of solar system beyond the planets that contains nuclei of short period comets

Question 6

Oort Cloud

Answer 6

50 000- 100 000 cloud containing long period comet nuclei

Question 7

Star system closest to the sun

Answer 7

Proxima Centauri, 4.3 ly away

Question 8

Light year

Answer 8

Distance light travels in 1 year, 63 239.7263 AU

Question 9

How long does it take earth to revolve around the Milky Way?

Answer 9

230 million years

Question 10

How far do stars move per hour?

Answer 10

15 degrees

Question 11

North celestial stars move in which direction?

Answer 11

Counter clockwise and don’t rise or set

Question 12

South celestial stars

Answer 12

Move clockwise and don’t rise or set

Question 13

Stars have an annual displacement of 1 degree per day because…

Answer 13

Of the revolution of earth around the sun (annual motion)

Question 14

If you observe the north celestial pole on the horizon, you are located on the…

Answer 14

Equator

Question 15

If all stars move parallel to your horizon you are located…

Answer 15

At one of the 2 poles

Question 16

Ecliptic

Answer 16

Imaginary line on the celestial sphere which shows the sun’s annual path

Question 17

Asterism

Answer 17

Pattern of stars that form part of a constellation, or composed of stars from more than one (Big Dipper, Little Dipper)

Question 18

How long does it take earth to rotate 1 degree?

Answer 18

24 x 60min/360 = 4 min/degree. Thus stars rise/set 4 minutes earlier every day.

Question 19

Relative to the constellations, the sun moves…

Answer 19

East to west

Question 20

The earths rotational axis precesses once every…

Answer 20

26 000 years

Question 21

We don’t see solar and lunar eclipses once a month because

Answer 21

The moons orbit is tilted by about 5 degrees relative to Earth’s orbital plane

Question 22

Moon’s umbra:

Answer 22

Total shadow, observer will see the total eclipse

Question 23

Moon’s penumbra

Answer 23

Partial shadow - partial eclipse

Question 24

Antumbra

Answer 24

Observer will see annular eclipse