Lecture 1

Question 1

What are the things needed for Intelligent life?

Answer 1

1) A star that is just the right size, about 0.75 - 1.5 as large as earths sun
2) A planet that is about the size of earth
3) The planet must be a terrestrial planet
4) Has to have lots of liquid
5) The planet must be the right distance from the sun
6) The planet must maintain a relatively circular orbit
7) The planet must rotate on its axis relatively frequently

Question 2

What are the 3 layers of the Earth

Answer 2

1) Hydrosphere
2) Atmosphere
3) Lithosphere

Question 3

The hydrosphere is the

Answer 3

worlds oceans

Question 4

The Atmosphere is the

Answer 4

very thin layer that holds gases to the earths surface via gravity

Question 5

The Lithosphere is the

Answer 5

Earths rocks

Question 6

The biosphere is the

Answer 6

area of the Hydrosphere, Atmosphere and lithosphere that contains life/living organisms
Is very thin layer

Question 7

What gases make up the suns atmosphere

Answer 7

89% Hydrogen

11% Helium

Question 8

What gases make up Venus atmosphere

Answer 8

96% carbon dioxide

4% nitrogen

Question 9

What gases make up Earths atmosphere

Answer 9

78% Nitrogen
21% oxygen
0.9% Argon

Question 10

What gases make up Mars atmosphere

Answer 10

95% Carbon dioxide

3% Nitrogen

Question 11

What gases make up Jupitar atmosphere

Answer 11

90% Hydrogen

10% Helium

Question 12

What gases make up Saturns atmosphere

Answer 12

96% hydrogen

4% Helium

Question 13

What gases make up Uranus and neptones atmosphere

Answer 13

85% Hydrogen

15% Helium

Question 14

The Big Bang happened how many years ago

Answer 14

13.9 Billion

Question 15

The Sun formed how many years ago

Answer 15

5 Billion

Question 16

The Earth formed how many years ago

Answer 16

4.6 Billion

Question 17

Photosynthesis and the oldest Fossils are dated back how many years ago

Answer 17

3.7 Billion

Question 18

Vertebrates in Fossil Records date back how many years ago

Answer 18

500 Million

Question 19

What happened when the Ozone formed?

Answer 19

IT allowed for life on land possible as the Ozone blocks the Suns UV rays

Question 20

When did the Ozone form?

Answer 20

400 million years ago

Question 21

Mammals and reptiles date back how long ago

Answer 21

350 Million years

Question 22

When did the dinosaurs become extinct? but what survived

Answer 22

65 million years ago except the birds survived

Question 23

The Early homo-ancestors date back to

Answer 23

250 thousand years ago

Question 24

Homosapiens date back to

Answer 24

50 thousand years ago

Question 25

When did recorded History begin

Answer 25

10 thousand years ago

Question 26

When did the high technology Era begin

Answer 26

100 years ago

Question 27

When did Large scale environmental issues become a problem?

Answer 27

40 years ago, (1960’s)