P7 Quiz - Are we alone?

Question 1 of 6

1

What is the approximate number of galaxies in the universe?

Select one of the following:

100 billion
3 billion
300 billion

Explanation

Question 2 of 6

1

What is an exo- (or extrasolar? planet?

Select one of the following:

a planet that orbits a star other than the sun
a planet that is further from the Sun than the Earth
any planet within our solar system

Explanation

Question 3 of 6

1

Exoplanets are difficult to detect and all the exoplanets discovered so far have been much bigger than our Earth.

Select one of the following:

True
False

Explanation

Question 4 of 6

1

What is the 'Goldilocks zone'?

Select one of the following:

where the distance from the star (eg. the Sun) means that it is neither too hot nor too cold to support liquid water
where the distance from the star has the perfect temperature (it's just right) to sustain life
the best chance of a solar system being able to sustain life

Explanation

Question 5 of 6

1

Many scientists believe that, due to the sheer ❌ of the universe and the fact that there are so many ❌, it is highly probable that there will be ❌ on another planet somewhere. Even if a small ❌ of stars have extrasolar planets orbiting them, many scientists believe that it is likely that life already ❌ elsewhere in the universe. However, as yet ❌ evidence for ❌ life - either at present or in the past - has been detected.

Drag and drop to complete the text.

size

galaxies

life

proportion

exists

no

extraterrestrial

Explanation

Question 6 of 6

1

Voyager 1 is one of two probes launched in 1977 by NASA to study the outer solar system. It has travelled 17 billion km carrying 'The Golden Records'.

Select one of the following:

True
False

	Created by Leah Firmstone almost 8 years ago

GCSE Physics (P7) Quiz on P7 Quiz - Are we alone?, created by Leah Firmstone on 23/06/2016.

P7 Quiz - Are we alone?

Question 1 of 6

What is the approximate number of galaxies in the universe?

Select one of the following:

Explanation

Question 2 of 6

What is an exo- (or extrasolar? planet?

Select one of the following:

Explanation

Question 3 of 6

Exoplanets are difficult to detect and all the exoplanets discovered so far have been much bigger than our Earth.

Select one of the following:

Explanation

Question 4 of 6

What is the 'Goldilocks zone'?

Select one of the following:

Explanation

Question 5 of 6

Drag and drop to complete the text.

Explanation

Question 6 of 6

Voyager 1 is one of two probes launched in 1977 by NASA to study the outer solar system. It has travelled 17 billion km carrying 'The Golden Records'.

Select one of the following:

Explanation