1.1

Question 1

Spectrum

Answer 1

All kinds of radiation together

Question 2

Light year

Answer 2

The distance that light travels in a year

Question 3

Scientific Notation

Answer 3

numbers with strings attached/ exponential notation

Question 4

Galactic year

Answer 4

the length of time the sun takes to complete an orbit of our galactic center

Question 5

Why is radiation important to the study of astronomy?

Answer 5

The radiation we receive from distant bodies is emitted by atoms that are too small to see with the unaided eye. The astronomer must understand the tiniest as well as the largest object.

Question 6

List 3 things you found interesting in the video

Answer 6

1. They said that astronomers have discovered that the galaxies are flying away from one another. The universe is expanding
2. A star is composed of countless stars
3. sun is just a star

Question 7

How many light years away is the nearest galaxy from earth? Name the galaxy

Answer 7

1. 25,000 light-years
2. Dwarf Galaxy

Question 8

How many light years across is our galaxy? Name our galaxy

Answer 8

1. 100,000 light yers
2. Milky way

Question 9

What is the speed of light?

Answer 9

200,000 per hour

Question 10

How fast is the earth moving through space

Answer 10

67,000 mpr

Question 11

How long does it take to reach the earth from the sun?

Answer 11

8 and 1/3 min

Question 12

How long does it take light to reach pluto from the sun?

Answer 12

5 and 1/2 hours

Question 13

How long is a galactic year?

Answer 13

230 million earth years