Space

Question 1

How is the star Mira different to the Sun?

Answer 1

It is bigger

Question 2

One way in which the moon is different to satelites

Answer 2

Its natural

Question 3

Satelite. Avg. distance. Speed. Time to
From earth. In km/s Orbit earth
In km
The moon. 391 400. 1.01. 28 days
Geo. 42 200. 3.07. 1 day
Navstar. 26 600. 3.8. 12 hours

What is the relationship between the average distance and speed on the basis of this data?

Answer 3

As the average distance decreases, the speed increases

Question 4

What is the property of an alpha radiation?

Answer 4

has the shortest range in air

Question 5

What is the property of an beta radiation?

Answer 5

will pass through paper but is stopped by thin metal

Question 6

What is the property of an gamma radiation?

Answer 6

It is very weakly ionising

Question 7

what might cause scientists to stop supporting one theory and to start supporting an alternative theory.

Answer 7

There might be more evidience to support the alternative theroy

Question 8

light from galaxies moving away from the Earth had longer wavelengths than expected.

What name is given to this effect?

Answer 8

Red shift

Question 9

What relationship between the speed of a galaxy and the distance is suggested by Hubble’s results?

Answer 9

The further away from the earth, the fast a galazy is moving

Question 10

In what way do the observations made by Hubble support both Theory 1 and Theory 2?

Answer 10

They both support that the universe is expanding

Question 11

Suggest what is likely to have caused scientists to start thinking Theory 1 is wrong.

Answer 11

More sufficeint evidience was discoveref to support theory 2