Midterm Questions - Sara Miller Quiz 1 material

Sara Miller Quiz 1 material

Academic year: 2021/2022

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Week One Content:

1 concept of gravity acting instantaneously (meaning, faster than

the speed of light) between objects was proposed by which famous physicist? a. Newtons

2 scientific evidence indicates the age of the universe is

approximately in which range? a. 13 to 15 billion years old

3 what evidence do astronomers deduce that the universe is

expanding? a. They can see a redshift in the spectral lines of distant galaxies

4 Hubble constant for the universe 5 billion years in the future will

be: a. Smaller than it is today.

5 of the following statements about the first few minutes of the

Big Bang is true? a. Hydrogen fused into helium.

6 you lived in a galaxy far away from the Milky Way, your red-shift

measurements would show that galaxies move a. Away from you in the same way that Hubble found.

7 long after the Big Bang did the Universe become transparent to

photons? a. Around 380,000 years

8 several minutes of the Big Bang, two main elements were present

and still make up the bulk of the interstellar medium near our galaxy today. These are: a. hydrogen and helium

9 is meant by 'inflation' of the early universe?

a. The universe expanded enormously in a very brief time

10. Inflationary theory does not explain

a. what happened before the Big Bang

Week One Content:

1. The concept of gravity acting instantaneously (meaning, faster than

the speed of light) between objects was proposed by which famous

physicist?

a. Newtons

2. Current scientific evidence indicates the age of the universe is

approximately in which range?

a. 13 to 15 billion years old

3. From what evidence do astronomers deduce that the universe is

expanding?

a. They can see a redshift in the spectral lines of distant galaxies

4. The Hubble constant for the universe 5 billion years in the future will

be:

a. Smaller than it is today.

5. Which of the following statements about the first few minutes of the

Big Bang is true?

a. Hydrogen fused into helium.

6. If you lived in a galaxy far away from the Milky Way, your red-shift

measurements would show that galaxies move

a. Away from you in the same way that Hubble found.

7. How long after the Big Bang did the Universe become transparent to

photons?

a. Around 380,000 years