Grade 9 Space

Question 1

Lightyear

Answer 1

9.5 x 10 to the 12 km

Question 2

Astronomical Unit

Answer 2

1.5 x 10 to the 8 km

Question 3

Equation for finding how long signals will travel

Answer 3

Time of Travel = Distance covered / Speed

Question 4

Earth’s Twin

Answer 4

Venus

Question 5

Gets its colour from methane in its atmosphere

Answer 5

Neptune

Question 6

Have the most rings

Answer 6

Saturn

Question 7

The largest planet

Answer 7

Jupiter

Question 8

Has three phases of water

Answer 8

Earth

Question 9

Known as the red planet

Answer 9

Mars

Question 10

Has the great red spot

Answer 10

Jupiter

Question 11

Hottest planet

Answer 11

Venus

Question 12

Only planet with O2

Answer 12

Earth

Question 13

Closest to the sun

Answer 13

Mercury

Question 14

Spins on its side

Answer 14

Uranus

Question 15

Problem with acid rain

Answer 15

Venus

Question 16

Has the shortest day

Answer 16

Jupiter

Question 17

Coldest planet

Answer 17

Uranus

Question 18

Closest rotation period to earth

Answer 18

Venus

Question 19

Scorpius

Answer 19

1. Looks like a scorpion
2. southern constellation
3. One of the twelve members of the zodiac
4. The brightest star in this sky area is Antares, which marks the scorpion’s head
5. Second magnitude stars make up the tail
6. Orion wanted to kill all of the wild animals on earth, Gaia sent a scorpion to stop him, and succeeded, reward for scorpius was putting it in the night sky.

Question 20

Speed of light

Answer 20

300, 000 km/s

Question 21

jovian planets

Answer 21

Jupiter, Saturn, Uranus, Neptune

Question 22

Living in space

Answer 22

1. Astronauts have to be careful where they sleep because if the area is not well ventilated then they can wake up gasping for air because the carbon dioxide they have breathed out has formed a layer around their heads that is preventing them from inhaling oxygen.
2. No showers because conserving water is very important. Instead, damp cloths are used for washing, don’t wash dishes and as much water as possible is recycled from the air.
3. Food choices in space have changed for the better over the years because technology was constantly developing (heat water in space).

Question 23

Space exploration

Answer 23

Innovations like Velcro that help us on earth were developed to help with space exploration

ISERV helps track natural disasters before they hit. This helps us prepare for them, which saves many lives

Helps find alternate planets that can sustain life, so in case earth becomes unliveable, we can move there. We can also test out different efficient ways to get there