GEO1211 20-21 Quiz 1

Question 1

What are the abbreviations for billions and millions of years ago?

Accepted Answer

Ga & Ma

Question 2

What process has made all the other elements?

Accepted Answer

Nuclear fusion

Question 3

When was the ‘late heavy bombardment’?

Accepted Answer

4.1-3.8 Ga

Question 4

What’s the process of splitting a continent apart called?

Accepted Answer

Rifting

Question 5

What element forms much of the mantle

Accepted Answer

Si

Question 6

What is evidence supporting sea floor spreading.

Accepted Answer

Symmetric magnetic reversals either side of mid-ocean ridges

Question 7

Which two elements were made as the universe cooled after the bigbang?

Accepted Answer

H & He

Question 8

What are the ancient bits of continental crust called?

Accepted Answer

Craton

Question 9

When did the Earth form?

Accepted Answer

4.5Ga

Question 10

What gets created at the surface when continents collide?

Accepted Answer

Mountains

Question 11

What is the process of rocky planet formation called?

Accepted Answer

Accretion

Question 12

What heated up the Earth during its formation?

Accepted Answer

Kinetic energy from accretion converted to heat

Question 13

What are the four ‘spheres’ that interact to form the Earth system?

Accepted Answer

Geosphere, Hydrosphere, Atmosphere, Biosphere

Question 14

Name a surface location today that is above a mantle plume

Accepted Answer

Hawaii

Question 15

How was the moon formed?

Accepted Answer

Collision with planetary embryo

Question 16

What element forms most of the Earth’s core?

Accepted Answer

Fe

Question 17

How old is the first proposed evidence for life on Earth?

Accepted Answer

3.8 Ga

Question 18

How old (roughly) is the oldest ocean floor?

Accepted Answer

150 Ma

Question 19

Where do the oceans and atmosphere come from?

Accepted Answer

Outgassing of volatiles

Question 20

How old is the universe?

Accepted Answer

13.7 Ga

Question 21

Name two gases that were abundant in the earliest atmosphere

Accepted Answer

CO2, N2

Question 22

Who came up with the theory of continental drift?

Accepted Answer

Alfred Wegener

Question 23

What is the heaviest element manufactured via fusion in the centre of giant stars?

Accepted Answer

Iron

GEO1211 20-21 Quiz 1

Questions 23

GEO1211 20-21 Quiz 1

Questions 23