Year 8 Space

Question 1

What does gravity affect

Answer 1

Anything with mass

Question 2

What is mass measured in?

Answer 2

Kg

Question 3

When is gravitational attraction strongest?

Answer 3

Close to a large mass/body

Question 4

What is gravity

Answer 4

The force that keeps us on the earth

Question 5

What is weight?

Answer 5

The force of gravity

Question 6

What is the unit of weight

Answer 6

Newton’s (N)

Question 7

Learn

Answer 7

W = m * g

Question 8

What is earth’s gravitational field strength?

Answer 8

10N/kg

Question 9

What is planet earths tilted axis in degrees?

Answer 9

23.5 degrees to vertical

Question 10

How many days does it take the moon to orbit the earth?

Answer 10

27

Question 11

What is a solar eclipse?

Answer 11

Moons orbit between sun and earth

Question 12

What is a lunar eclipse?

Answer 12

Earth between sun and moon

Question 13

When was sputnik I placed into orbit?

Answer 13

1957

Question 14

What are satellites used for?

Answer 14

1. Communication
2. Taking photos of the earth
3. GPS ( global positioning system)
4. Taking photos of stuff in space.

Question 15

What do geostationary satellites do?

Answer 15

Stay above the same place on earth.
Match the earths rotation (24 hrs).
Use for communication and TV.

Question 16

What do polar orbiting satellites do?

Answer 16

Pass over N and S pole.
Orbit above the earth.
Used for mapping, GPS, spying and monitoring.

Question 17

What is 1 lightyear?

Answer 17

The distance light travels in a year.

Question 18

What is 1 lightyear equal to?

Answer 18

1 ly = 300,000,000 x 365 x 24 x 60 x 60m

Question 19

How far away is the nearest star?

Answer 19

4 light years