Waves and the universe

Question 1

Fill in the gap:

Light from other galaxies is ______________-

Answer 1

Red-shifted

Question 2

Fill in the gap:

More distant galaxies have a ______ red shift than the nearer ones

Answer 2

Greater

Question 3

Fill the gap:

This means that the more distant galaxies are moving _____ than nearer ones

Answer 3

Faster

Question 4

What does SETI stand for?

Answer 4

Search for Extra Terrestrial intelligence

Question 5

What are two other ways in which scientists are trying to get evidence of life in space?

Answer 5

1. Robots

2. Probes

Question 6

What does SETI look for?

Answer 6

Radio signals from other planets

Question 7

What is a spectrometer used for

Answer 7

It analyses the light given out by stars and galaxies

Question 8

Describe the life cycle of stars like our sun

Answer 8

1. Cloud of gas (nebula)
2. Protostar
3. average star
4. Red giant
5. Shell of gas
6. White dwarf
7. Black dwarf

Question 9

Describe life cycle of massive stars

Answer 9

1. Cloud of gas (nebula)
2. Protostar
3. Massive star
4. Red supergiant
5. Supernova
6. Neutron star
7. Black hole

Question 10

How is red giant formed?

Answer 10

Core collapses and outer layers expand

Question 11

What happens in a supernova?

Answer 11

The star explodes

Question 12

What is a protostar?

Answer 12

When the cloud is compressed because of the gravitational pull

Question 13

Fill in the gap:

Both the Steady State and Big Bang say that universe is __________-

Answer 13

1. Expanding

Question 14

What supports both theories?

Answer 14

1. Red shift

Question 15

What does CMBR support?

Answer 15

1.Big Bang

Question 16

What is CMBR?

Answer 16

Radiation released by Big Bang