Deep Space Objects and Big Bang Theory

Question 1

What would be the effect on the light from a star that is moving towards the Earth?

Answer 1

Its light would increase in frequency and become blue shifted

Question 2

Which theory of universe origin did Hubble’s observations add weight to?

Answer 2

Big Bang Theory

Question 3

What is the order of the final stage for a star with a mass of 10 times that of our sun?

Answer 3

Red Giant, Supernova, Neutron Star

Question 4

What is the most dramatic property of a neutron star?

Answer 4

High density

Question 5

What is the name given to the visible edge of a black hole

Answer 5

Event horizon

Question 6

Where are larger elements created?

Answer 6

Supernovae

Question 7

What is the heaviest element that will come from our sun?

Answer 7

Iron

Question 8

How does the Doppler effect apply to a wave source such as sound?

Answer 8

When travelling towards us the wavelength is smaller and we hear a higher frequency. When travelling away from the wavelength is greater and the frequency drops

Question 9

How did Hubble use the Doppler effect to determine distance and speed of galaxies?

Answer 9

He observed the light spectrum coming from distant galaxies which contains the information about the motion of the galaxy

Question 10

What Is the first step in the evolution of a star?

Answer 10

A dense cloud of dust and gas starts to collapse under its own gravity

Question 11

What is the second step in the evolution of a star?

Answer 11

Individual clumps grow hotter until they reach 15 million degrees and nuclear fusion begins

Question 12

What is the third step in the evolution of a star?

Answer 12

For billions of years, the star shines by converting hydrogen into helium in its core

Question 13

What is the fourth step in the evolution of a star?

Answer 13

Central hydrogen runs out, core collapse and heats up and the car expands and becomes a red giant

Question 14

What is the fifth step in the evolution of a star?

Answer 14

The star jettisons its outer atmosphere as planetary nebula

Question 15

What is the sixth step in the evolution of a star?

Answer 15

The collapsed core survives as a hot white dwarf

Question 16

What is the final step in the evolution of a star?

Answer 16

The core cools very slowly to become a cold, black globe

Question 17

What are the key characteristics of the milky way galaxy?

Answer 17

There are billions of stars, 100,000 light years across, spiral shape, sun is 30,000 light years from the centre

Question 18

If a star was moving towards us, what would we expect to see in the pattern of its spectrum?

Answer 18

All spectral lines would be shifted towards the blue end of the spectrum

Question 19

How are most planets formed?

Answer 19

Some of the gas and dust left over during the initial formation of the protostar will collapse to form planets

Question 20

What determines the lifetime of a star?

Answer 20

Mass

Question 21

When gravitational forces drive electrons into the nucleus of the atoms in the core of a large star, what is the result?

Answer 21

Neutron Star

Question 22

List these 5 objects in order of increasing mass: Red Dwarf, White Dwarf, Nebula, Neutron Star, Black Hole

Answer 22

Red Dwarf, White Dwarf, Nebula, Neutron Star, Black Hole