yr 13 revision - astrophysics

yr 13 revision - astrophysics

12th Grade - University

16 Qs

quiz-placeholder

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yr 13 revision - astrophysics

yr 13 revision - astrophysics

Assessment

Quiz

Physics

12th Grade - University

Medium

Created by

Arunthathi Sankaran

Used 1+ times

FREE Resource

16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Two stars with the same luminosity might produce different radiation fluxes at Earth. This is primarily due to the stars having different

diameters

distances from the Earth

motions through the Universe

surface temperatures

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The gravitational field strength at the surface of Mars is one third that at the surface of the Earth. A mass-spring system with a frequency of 3.0 Hz at the surface of the Earth would have a frequency at the surface of Mars of

5.2 Hz

3.0 Hz

1.7 Hz

1.0 Hz

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following statements about the possible fate of the Universe is not correct?

If the Universe is open then it will continue to expand forever.

If the Universe is open then it will eventually reach a maximum size.

If the Universe is closed then it will eventually reach a maximum size.

If the Universe is closed then it will reach a maximum size and then contract.

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A Hertzsprung-Russell diagram is plotted for an old star cluster. Compared with a young cluster containing a similar number of stars there will be fewer

light main sequence stars.

massive main sequence stars

red giant stars.

white dwarf stars.

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

About 25% of the mass of our Universe is thought to consist of dark matter. A key property of dark matter is that it

absorbs all electromagnetic-radiation.

cannot be detected.

emits no detectable electromagnetic-radiation

exerts no gravitational force.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Cosmologists describe the universe as being open, closed or flat. A closed universe is one which

has always been the same size.

has a maximum size.

has an uncertain future.

will expand forever.

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

In many ways electrical and gravitational forces are similar. One key difference is that only

electrical forces can be attractive and repulsive.

electrical forces have an infinite range.

gravitational forces can be attractive and repulsive.

gravitational forces have an infinite range.

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