What is the difference between mechanical and chemical weathering?

MW: physically break down CW: weather w/ acids

A rock formed by layers of sediments, compacted and cemented

a process by which rocks are broken down into smaller pieces

What is a metamorphic rock?

existing rocks that are changed by heat and pressure

The movement of sediments or rock to one place or another.

How was Earth formed?

Earth grew from a cloud of dust

Why do tectonic plates move?

Magma in the mantle pulls plates along as it heats and cools

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Year 8 Earth Science Revision Quiz

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Questions 23

Answers

1
What is the difference between mechanical and chemical weathering?
MW: waves hit the rocks CW: plants grow in rock cracks
MW: rocks scrape each other CW: chemical breakdown
MW: physically break down CW: weather w/ acids
MW: break down with acids CW: physically break down
2
Hot liquid on the Earth's surface is called?
None of the above
Lava
Magma
Both
3
What do the tectonic plates do at a convergent boundary?
They move past each other
They pull apart
The crash into each other
4
Sedimentary rock is
A rock that formed by heat and pressure
A rock formed by layers of sediments, compacted and cemented
A rock that falls from the sky.
A rock formed by cooling magma.
5
Rocks that form from cooling magma underground are called?
Extrusive igneous rocks
Intrusive metamorphic rocks
Extrusive metamorphic rocks
Intrusive igneous rocks
6
Which of these are not in the rock cycle?
heat and pressure
melting
uplifting
evaporation
7
Igneous rock changes into Sedimentary rock by?
Heat and Pressure
Compaction and Cementation
Melting and Cooling
Weathering and Erosion
8
The rock cycle ____.
begins with igneous rock
ends with igneous rock
has no beginning or end
ends with metamorphic rock
9
How many major tectonic plates are on Earth?
8
50
5
7
10
What is weathering?
a process by which rocks are broken down into smaller pieces
a process by which the earth's surface is heat by the sun
a process where clouds are formed and causes rain
the changing of the seasons; fall, winter, spring and summer
11
what type of rock is this?
Sedimentary rock
Igneous rock
Metamorphic rock
None the above
12
What type of elements make up the inner core of earth?
oxygen and hydrogen
nickel and iron
iron and aluminum
silicon and oxygen
13
What is a metamorphic rock?
pieces of other rocks that are cemented together
existing rocks that are changed by heat and pressure
magma
crystallization of hot melted rocks or minerals
14
When tectonic plates rub together, they create friction that can cause an earthquake
True
False
15
what type of rock it this?
Oceanic rock
Sedimentary rock
Igneous rock
Metamorphic rock
16
What is Erosion?
The movement of sediments or rock to one place or another.
The wearing down of rocks.
The breaking down of rocks.
When rock sediments are transformed into another rock.
17
Can mechanical weathering and chemical weathering happen at the same time?
No
Yes
18
What do tectonic plates do at a divergent plate boundary?
They pull apart
They move past one another
They crash into each other
19
How was Earth formed?
Earth grew over time
Earth grew from a cloud of dust
It formed from a piece of an asteroid
Space rocks formed Earth
20
What's below tectonic plates?
Magma
Iron
Rocks
Lava
21
Scientists estimate the age of the Earth to be about
3.8 billion years.
4.4 million years.
4.6 billion years.
10 billion years.
22
what type of rock it this?
Oceanic rock
none of the above
Sedimentary rock
Metamorphic rock
23
Why do tectonic plates move?
The moon's tidal pull
The magnetic force of the Earth's core
Magma in the mantle pulls plates along as it heats and cools
Because the Earth rotates

Year 8 Earth Science Revision Quiz Flashcards | StudBud