science exam

Question 1

How are igneous rocks formed

Answer 1

when magma cools and hardens

Question 2

how are sedimentary rocks formed

Answer 2

when sediments pile on top of one another from deposition, weathering and erosion.

Question 3

How are metamorphic rocks formed

Answer 3

from intense heat and pressure

Question 4

what are the 4 layers of the earth

Answer 4

crust, mantle, outer core and the inner core

Question 5

Is the outer core liquid or solid

Answer 5

liquid

Question 6

is the inner core liquid or solid

Answer 6

solid iron and nickel

Question 7

is the crust liquid or solid

Answer 7

solid

Question 8

is the mantle solid or liquid

Answer 8

solid

Question 9

what are tectonic plates

Answer 9

huge pieces of the earths crust and uppermost mantle

Question 10

how do mountain ranges form

Answer 10

where two continental plates collide and push upwards

Question 11

define subduction

Answer 11

the downward movement of the edge of a plate that slide underneath another plate

Question 12

define uplift

Answer 12

where two plates collide making them lie one on top of each other

Question 13

what is a fault line

Answer 13

a crack in the surface of the earth

Question 14

what is the hypo centre of a earthquake

Answer 14

directly below where the earthquake starts

Question 15

what is the epi centre of a earthquake

Answer 15

directly above where the earthquake starts

Question 16

how are earthquakes formed

Answer 16

when the plates cause friction causing the earthquake to release energy in waves that go through the crust making the ground shake