12 solar system more like so lar you want to know about highschool

Question 1

What is pluto

Answer 1

Dwarf planet

Question 2

What are units used to measure distance in space & equal how much km

Answer 2

Astronomical Unit (A.U.)
1 A.U. = 1.5 x 10^8 km

Light Years (ly)
1ly = 9.5 x 10&12 km

Question 3

Whaat is astronomoical unit

Answer 3

Average distance between Earth and Sun

Question 4

What is a lightyear

Answer 4

Distance travelled by light in 1 year.
Velocity of light = 300 000km / s

Question 5

What are main characteristics of Mercury

Answer 5

Closest to Sun
Smallest planet
Surface similar to moon - asteroid craters & cliffs ~ 10 km
No atmosphere - light cannot scatter - sky is dark

Question 6

What are main characteristics of Venus

Answer 6

Second closest planet
‘Greenhouse planet’ - high content of carbon dioxide
Rotates east -> west = Sun rises from west
Size & age same as Earth

Question 7

What are main characteristics of Earth

Answer 7

Third planet from Sun
Only place inhabited by living things
Has atmosphere - protects surface from solar wind, harmful UV rays & radiation

Question 8

What are main characteristics of Mars

Answer 8

Fourth planet from sun
‘Red Planet’ - Rust
Two different areas
1. Brighter area - dust & red sand
2. Poles - Frozen water & carbon dioxide

Question 9

What are main characteristics of Jupiter

Answer 9

Fifth planet, largest planet
Twice amount of all planets
Protector of Earth - deflect huge objects from hitting Earth w/ strong gravity
Has Great Red Spot - anticyclonic system

Question 10

What are main characteristics of Saturn

Answer 10

Sixth planet, second largest planet
Ring system - ice & small rocky material & dust

Question 11

What are main characteristics of Uranus

Answer 11

Seventh planet, third biggest
Ring system - thinner & darker (methane gas absorbs red light)
First elements in interior - ice & rock
Axis of rotation is tilted ~ parallel to orbit

Question 12

What are main characteristics of Neptune

Answer 12

Eighth planet

Question 13

What is another name of gas giants and which planets

Answer 13

Jovian
Jupiter
Saturn
Uranus
Neptune

Question 14

Which planet have >90 Rotational direction

Answer 14

Venus - 117
Uranus - 98

Question 15

What is another name of planets with land

Answer 15

Terrestrial
Mercury
Venus
Earth
Mars

Question 16

Which planet has most moons

Answer 16

Jupiter

Question 17

What is main atmospheric content of Jovial

Answer 17

Jupiter & Saturn:
Hydrogen, Helium, methane, ethane, ammonia, water
Uranus:
- ethane & ammonia & water
Neptune:
- ammonia & water

Question 18

How is relationship between temp & distance from sun of planet without atmosphere

Answer 18

Mercury:
Sunlight directly reaches surface -> area facing Sun extremely hot, >427C -> darker area extremely cold, -173C

Question 19

How is relationship between temp & distance from sun of Earth

Answer 19

Clouds -> reflect sunlight into outer space
Atmosphere -> traps some heat -> greenhouse effect

Question 20

How is relationship between temp & distance from sun of Venus

Answer 20

Thick clouds -> reflect sunlight into outer space
Atmospheric layer -> mostly carbon dioxide -> greenhouse effect -> more heat is trapped ~ 462C

Question 21

How is relationship between temp & distance from sun of Mars

Answer 21

Has atmosphere, but surface pressure extremely low (1/100 of Earth) -> minimal effect on surface temperature
-143 - 35

Question 22

How is relationship between temp & distance from sun of giant planets

Answer 22

Surface covered in gas -> receive very little sunlight -> extremely low surface temp

Question 23

Gravity on surface of planet depends on

Answer 23

Mass & density

Question 24

What does gravity of Earth being 9.8 m/s^2 mean

Answer 24

If we release an object from a certain height -> fall at acceleration of 9.8m /s^2

Question 25

Which planet have lesser Gravity than Earth & why

Answer 25

Mercury & Mars -> masses lower Venus ~ Earth -> almost same mass

Question 26

Why Jupiter gravity much higher than Earth

Answer 26

Mass is extremely high although low density

Question 27

How is the gravity on Saturn, Uranus and Neptune

Answer 27

Gravity not as high as Earth -> high mass but low density

Question 28

What is the relationship between distance from Sun and orbit time

Answer 28

Further planet from Sun, more time to orbit the Sun

Question 29

What happens if rotation of Earth slows down/stops completely

Answer 29

Longer day and night duration in two different parts 1. Part facing Sun - More desert areas 2. Part do not receive sunlight - Temperature drop Change in high & low tide

Question 30

What are natural satellites

Answer 30

Objects that move around planets on their own orbit

Question 31

What does Earth look like from Moon

Answer 31

Remain in about the same place in the sky everyday Goes through phases similar to moon

Question 32

What characteristic of Earth causes it to be suitable for life

Answer 32

Water -> living process Oxygen content -> respiratory process Suitable temp range -> not too hot / cold Atmosphere -> blocks UV rays Receives sunlight -> photosynthesis Gravity -> keeps object from floating

Question 33

What is ecological footprint

Answer 33

Measure of ability of water and land to provided the basic needs of humans (food, water, shelter etc) & ability to absorb all human wastes & reproduce resources after used

Question 34

Ecological footprint is the ___ measurement for ___ areas, which area

Answer 34

Ratio Six Carbon dioxide waste treatment, construction, forests, agricultural, farming, fishing

Question 35

If ecological footprint exceeds ability of Earth to renew resources

Answer 35

Depleted of all its resources

Question 36

Where are the areas in ecological footprint used for

Answer 36

Carbon footprint -> energy Construction -> settlement Forests -> wood & paper Agricultural & farming -> food & fibre source Fishing -> seafood