Space

Question 1

What is an asteroid?

Answer 1

a small rocky body orbiting the sun

Question 2

For a geostationary satellite what is the period of its orbit?

Answer 2

24 hours

same period as the earth’s rotation so it stays above the same place

Question 3

If a satellite moves to a higher altitude orbit what happens to its period (how long it takes to orbit)

Answer 3

It increases

Question 4

Name at least 2 uses of satellites

Answer 4

Any of these
* GPS,
* weather forecasting
* communications,
* space exploration (eg Hubble telescope, ISS).

Question 5

What is the name for a small rocky body orbiting the sun?

Answer 5

An asteroid

Question 6

What altitude (how high) does a geostationary satellite orbit?

Answer 6

36 000 km

Question 7

What is the solar system?

Answer 7

The gravitationally bound system of the Sun and the objects that orbit it.

This includes the eight planets, asteroids, comets and meteroids

Question 8

What is the value of g in W=mg?

Answer 8

Depends on the planet!
It’s on the data sheet. For earth it’s 9.8N/kg

Question 9

What is meant by 1 light year?

Answer 9

The distance light can travel in 1 year

Question 10

How would you calculate 1 light year?

Answer 10

Use d=vt
v= speed of light (3 x 10^8 m/s)
t=60x60x24x365.25 s

60 sec in 1 min, 60 min in 1 hour, 24 hr in 1 day 365.25 days in 1 year

Question 11

What is meant by the term moon.

Answer 11

A natural satellite of a planet/
dwarf planet

Question 12

What is the approximate age of the universe?

Answer 12

approximately
13.8 billion years old