Evidence is Everything

Question 1

List the layers of the Earth in order

Answer 1

Crust
Mantle
Outer Core
Inner Core
Centre
Lithosphere (crust and solid mantle)
Asthenosphere (upper mantle)

Question 2

Describe continental drift

Answer 2

Alfred Wegener first proposed the theory of continental drift in 1912. CD occurs due to the movement of tectonic plates. This results in the movement of the continents over millions of years.

Question 3

Name the supercontinent and the names of the split.

Answer 3

Pangaea- supercontinent
Laurasia- northern continents
Gondwana- southern continents

Question 4

What evidence do we have to support the theory of continental drift?

Answer 4

• Fossils
• Jigsaw puzzle
• Seafloor spreading
• Magnetic striping

Question 5

Describe the movement of plate interactions

Answer 5

Divergent- divide
Convergent- collide
Transform- rub

Question 6

What causes continental drift?

Answer 6

Convection currents

Question 7

Describe the theory of evolution

Answer 7

-Charles Darwin proposed the theory
-Observed the geological distribution of plants, animals, fossils etc.
-Species can develop from a common ancestor

Question 8

What is natural selection?

Answer 8

The process of populations of living organisms adapting and changing to suit the environment.

Question 9

What evidence do we have to support the theory of evolution?

Answer 9

• Fossil layers in the Earth’s crust
• Similarities in organisms alive today (DNA, embryos etc.)

Question 10

How do fossils form?

Answer 10

-Sediment covers the organism
- Sediment turns to stone
-Mould crystallises, forming a cast
-Fossil is exposed on Earth’s surface

Question 11

What is the Law of Superposition?

Answer 11

Describes that the oldest rock strata will be deeper into the Earth’s crust than the younger rock strata.

Question 12

Why is the archaeopteryx important?

Answer 12

• Evidence of Darwin’s theory
• Bird with dinosaur-like features (teeth, long tail)