Astronomy Test Study

Question 1

The human body is made of…..?

Answer 1

Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus, etc.

Question 2

What is a black hole?

Answer 2

A region of space having a gravitational field so intense that no matter or radiation can escape.

Question 3

Due to the Doppler Shift, stars are slightly __________ as they approach.

Answer 3

Blue

Question 4

Due to the Doppler Shift, stars are slightly _________ as they move away.

Answer 4

Red

Question 5

What is the force responsible for forming the structure of the Universe?

Answer 5

Gravity

Question 6

What is a nebula?

Answer 6

A huge cloud of dust and gas where stars are born.

Question 7

Element with the highest percentage in the human body?

Answer 7

Oxygen

Question 8

What is a supernova?

Answer 8

A star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.

Question 9

What is a light-year?

Answer 9

The distance that light travels in one year.

Question 10

What is an astronomical unit?

Answer 10

The average distance between the Earth and the Sun.

Question 11

What is fusion?

Answer 11

Nuclear fusion occurs between two atomic nuclei to form a bigger nucleus that releases energy; it occurs in the sun, stars, and on Earth.

Question 12

What is a spectroscope?

Answer 12

A spectroscope collects the light from distant stars and separates that light into bands of different colors; by studying these bands, astronomers identify the elements/temperature of a star.

Question 13

What is the Big Bang Theory?

Answer 13

Approximately 13.7 billion years ago, the contents of the universe were compressed under extreme pressure, temperature, and density in a very tiny spot. The universe rapidly expanded, and matter began to come together and form galaxies.

Question 14

The sun is currently a….?

Answer 14

Main sequence Star.

Question 15

A star begins as a ball of gas and dust pulled together by…?

Answer 15

Gravity

Question 16

What are the life cycle stages of a Low mass star?

Answer 16

1. Nebula
2. Protostar
3. Main Sequence
4. Red Giant
5. White Dwarf

Question 17

What is a Neutron Star?

Answer 17

A compressed core of a star that became a supernova.

Question 18

Rank in order (smallest to largest) galaxy, the universe, and solar system.

Answer 18

Solar System, Galaxy, Universe.

Question 19

What is the evidence for the Big Bang Theory?

Answer 19

Red Shift, Cosmic background radiation.

Question 20

What are the steps of the Big Bang Theory?

Answer 20

1: Hot, Dense State (point of singularity).
2: Expansion.
3: Cooling & Condensing.
4: Elements Formed From Stars.
5: Solar Systems.

Question 21

What is the Electromagnetic Spectrum?

Answer 21

The complete range of electromagnetic waves is placed in order of increasing wave length and frequency.

Question 22

What are the life cycle stages of a High Mass star?

Answer 22

1. Nebula
2. Protostar
3. Main Sequence
4. Super Red Giant
5. Supernova
6. Neutron Star or Black Hole.

Question 23

What is a “baby star”?

Answer 23

Protostar

Question 24

Red giant - Low or High Mass?

Answer 24

Low mass

Question 25

The life cycle of a star depends on whether it’s a…?

Answer 25

High or Low mass star.

Question 26

Super Red Giant - Low or High Mass?

Answer 26

High Mass

Question 27

Main Sequence stars are mostly made of…?

Answer 27

Hydrogen & Helium

Question 28

What happens to a star when only iron is left in its core?

Answer 28

Supernova

Question 29

(True or False) - A black hole forms when a large star collapses and comes to the end of its life.

Answer 29

True

Question 30

(True or False) - Out solar system is formed from a cloud of gas and dust called a protostar.

Answer 30

False - Nebula not Protostar