Space exploration 1

A satellite is ...............

• travelling away from earth

• an object that is orbiting earth

• used to tune in televisions

• a tin can in space

Which of these is in orbit around the earth? (select all correct answers)

• International space station

• the Sun

• the moon

• Mars

In what year did humans first land on the moon?

• 1951

• 1969

• 1989

• 2002

What does geostationary orbit mean?

• The satellite is in a fixed position above the earth

• The satellite is directly above one of the poles

• The satellite is only visible in the northern hemisphere

• The satellite is moving away from earth

How long does it take a geostationary satellite to go around the earth once?

• 31 minutes

• 16 hours

• 24 hours

• 30 days

Why do we experience weighlessness in space?

• We are constantly falling

• There is no gravity in space

• There is no air in space

• The moon pulls us away from earth

What happens to our bones in space?

• They get heavier

• They get longer

• They become less dense

• They shrink

Why must astronauts have an oxygen supply in their spacesuits?

• There is almost no oxygen in space

• To keep them warm

• To weigh them down

• To protect them from harmful radiation

How do astronauts survive the extreme temperatures in space?

• They avoid the sun

• Their suits have temperature regulators

• They place hot water bottles in their suits

• They wear thick socks

Which of these might you experience if you are in space?

• increased blood pressure

• loss of muscle mass

• irregular sleep pattern

• loss of bone density