Earth

Question 0

What causes volcanos?

Answer 0

When magma rises to the surface of the earth.

This gas can cause pressure to build up in the mountain and it eventually explodes

Question 1

What causes earth quakes?

Answer 1

When rock underground suddenly breaks along a fault.

The sudden release of energy causes the seismic waves that make the ground shake

Question 2

Mantle?

4 facts

Answer 2

Below the crust

Thickest layer of the earth

Very hot

Made up of solid rock

Question 3

Crust?

2 facts

Answer 3

Thin crust / outer layer of the earth

Made up mostly of rock

Question 5

Outer core?

1 fact

Answer 5

A liquid layer of melted nickel and iron

Question 5

Which layer of the earth is the hottest?

Answer 5

Mantle

Question 6

Inner core?

2 facts

Answer 6

Made of solid nickel and iron

The most inner core of the earth

Question 7

The _____ is the thinnest part of the earth?

Answer 7

Crust

Question 8

What causes the tectonic plates to move?

Answer 8

CONVECTION CURRENTS in the liquid mantle

Question 9

Cone volcano?

3 facts

Answer 9

CONE SHAPED

SMALL

EXPLOSIVE

Question 11

Shield volcano?

4 facts

Answer 11

Low slopes SHAPED LIKE A SHEILD

LARGE VOLCANO

QUIET VOLCANO

Spews runny lava

Question 12

Erosion meaning?

Answer 12

The breakdown of rock into smaller pieces through exposure to wind, water, heat and cold

Question 12

Two types of weathering?

Answer 12

1. Mechanical

2. Chemical

Question 13

Weathering meaning?

Answer 13

The movement of weathered material by gravity, wind, and cold

Question 14

Mechanical weathering?

Answer 14

Gradual breakdown of rock to sand. And then to silt or powdered rock and finally to clay through physical means

Question 15

Chemical weathering?

Answer 15

The breakup of rock caused by a change in its chemical make up.

Question 16

_____ is the most common producer of chemicals that can weather rock.

Answer 16

Rain - Absorbs carbon and or Sulfur dioxide from the atmosphere, forming carbonic ACID and sulphuric ACID.

Turns to ACID RAIN

Question 17

Three types of PLATE BOUNDARIES ?

Answer 17

1. Transform
2. Convergent
3. Divergent

Question 18

Convergent boundaries?

Answer 18

Where two plates are colliding

Question 19

Divergent boundaries?

Answer 19

Where two plates are moving apart

Question 20

Transform boundaries?

Answer 20

Where plates slide past each other

Question 21

_________ (?) is the action of exogenic processes which remove soil and rock from one location on the earths crust and is deposited.

Answer 21

Erosion

Question 22

________ erosion is the wearing away of land and the removal of beach or dune sediments by wave action, tidal currents, wave currents, drainage or high winds.

Answer 22

Coastal

Question 23

3 types of rocks?

Answer 23

1. Sedimentary
2. Metamorphic
3. Igneous

Question 24

What is a sedimentary rock?

Three facts including an example

Answer 24

Formed from particles in sand, shells, pebbles etc.

Fairly soft, break easy, fossils are found in them

EXAMPLE - Limestone

Question 25

What is a metamorphic rock?

Three facts including an example

Answer 25

Formed under the surface of the earth

Formed due to intense pressure and heat

EXAMPLE - Marble

Question 26

What is igneous rock?

Three facts including an example

Answer 26

Formed when magma cools and hardens

Gas bubbles are trapped during the cooling process leaving holes in the rock

EXAMPLE - Basalt

Question 27

How is the shape of a volcano determined?

Answer 27

By the type of eruption and the composition of the magma

Cone and composite are violent

Shield is quiet

Question 28

Running water causes _ (?) shaped valleys by erosion

Answer 28

V shaped

Question 29

______ (?) Form U - Shaped valleys

Answer 29

Glaciers