Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Y9 QAYREEN STUDY DECK > SST > Flashcards

SST Flashcards

1
Q

How many layers does Earth have?

A

The Crust
The Mantle
The Core

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Define the crust

A

This is the first layer on which we live. It is made of rock and it is 7 to 70 km thick.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define Mantle

A

This is the second layer of the Earth, made up of solid rock in molten form. It is
around 2900km thick. The upper mantle is rigid and the lower mantle is soft and flowing
slowly.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Define Core

A

It is the earth’s third and largest layer, made up of iron and nickel. The outer core is
liquid and the inner core is solid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What’s a continental crust

A

The continental crust forms the land, mainly made up of granite, and up to 70km thick.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What’s oceanic crust?

A

The oceanic crust is under the ocean, mainly made up of basalt rock. It is about 7km thick but heavier than continental crust.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is Granite

A

Granite is an igneous rock, found in continental crust
It is extrusive, forming at the surface by volcanic eruption.
It is found in different shades and colours.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What Basalt

A

Ocean floor is made up of basal, it is an igneous rock.
It is intrusive, forming beneath the surface.
It is more thicker and harder than granite.
It is typically dark in colour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the highest mountain under the ocean?

A

Mauna Kea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is Oceanic trenches?

A

Ocean trenches are steep, narrow depressions in the deepest parts of the ocean, where old ocean crust from one tectonic plate is pushed beneath another plate, raising mountains, causing earthquakes, and forming volcanoes on the seafloor.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is ‘‘the ring of fire’’?

A

Volcanoes around the Pacific Ocean

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Can Earthquakes happen on Earth and Ocean?

A

Yep

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are Plates are pulled along by the sinking edges called?

A

slab pull

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Crust and Mantle together form the…?

A

lithosphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

iron and Nickel are present in…?

A

the core

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is Lithosphere?

A

The lithosphere, a hard rock layer formed by the crust and upper mantle, is home to Earth’s living things, forests, agriculture, and it is rich in minerals.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Why do the Earth’s plates move?

A

Scientists believe gravity, temperature, and pressure under the earth cause plate movements, with convection current being the driving force.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is it called when plates are pushed along by the spreading ridge of the lithosphere

A

ridge push

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the region where two plates meet called?

A

boundary or margin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is Earthquake?

A

An Earthquake is caused by sudden shifting of the rocks under the crust due to plate movements.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is a volcano?

A

A volcano forms when liquid rock or magma bursts out through the Earth’s hard surface due to plate movements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is Geothermal energy?

A

This is heat energy stored in rocks, Eg; In Iceland, Water is pumped down into the hot
rocks and it comes back as steam. This is used to heat home or drive turbines to make
electricity.

23
Q

Write any three benefits of plate movements.

A

Volcanic lava provides fertile soil, valuable materials like copper, gold, silver, and lead, geothermal energy, and fossil fuels like oil and gas from ocean floor uplifting

24
Q

what is the mountain in Japan is formed by volcanic eruption

A

Mount Fuji

25
Q

Europe’s most active volcano is what? its also in Sicily :3 cuz is silly nyeheheehe

A

Mount Etna (ps it grows some rich yummy in my tummy grapes)

26
Q

It is dangerous to live near what margin?

A

Plate margin
(eat em margins on a plate is unhealthy)

27
Q

What is the most dangerroussss volcano?!?!? ⁀⊙﹏☉⁀

A

MOUNT VESUVIUS!!!!

whowhowhowhoooooo

28
Q

Whoa whoa…WHY IS MOUNT VESUVIUS DANGEROUS???
( ≖.≖)

A

Italy’s most dangerous volcano is fed by thick magma, pyroclastic flows, and a highly populated area, with around 600,000 people living within 8km of its crater. (yeh ik it so long) {ay?? thas what she said???}

29
Q

The African plate is sinking under the…?

(Africa undertale reference?!)

A

Eurasian plate
(cuz ur asian lmaooo)

30
Q

What can volcano eruption cause?

A

Volcanic explosive eruptions cause high-altitude ash to block the sun, lower temperatures, damage plane engines, cause acid rain, kill trees and plants, and suffocate, collapse buildings, and bury homes.
(so scwary)

31
Q

Whadda pyroclastic flow be doin? (◑́_◑᷅ )

A

Pyroclastic flow is a heavy cloud that collapses during volcano eruption, traveling over 100km an hour at 1000°C, and can burn, burry, and kill.

32
Q

m-m-mudflow-kun….wh-what are you up to th-this time?!~

A

Mudflow, a process where gases and soil mix with water after volcanic eruptions, can travel up to 100km an hour, sweeping everything along.
(LMAOAOAO WHAT IS THIS LOLLL)

33
Q

YOUUU, YES U, WHAT IS MAGMA, HMMM???

A

Magma is the molten rock under the earth in the lower mantle, it is always on move. It rises through crack in the lithosphere called volcanic eruption. ( ͡❛ ᴗ ͡❛)

34
Q

Ugh whatcha doin Lava?

A

Lava is the molten rock that breaks through the Earth’s surface. Lava flows down after the volcanic eruption, cools and hardens to form igneous rock.

35
Q

Igneous rocks are wat

A

Igneous rocks, formed when magma erupts and flows as lava, are formed when the lava cools and hardens, forming materials like basalt, pumice, and granite.

36
Q

Where can ya find iron and nickel?

A

tha core

37
Q

The continental crust is made up of…?

A

granite

38
Q

basalt is what type of rock?

A

igneous

39
Q

A margin where plates push into each other is called what?

A

destructive plate margin

40
Q

A margin where plates slide apart from each other is called what?

A

conservative plate margin.

41
Q

Some plates are moving apart. Explain with an example.

A

Plates move apart, causing volcano eruptions and forming new layers of lithosphere. The North American and Eurasian plates are moving under the Atlantic Ocean, causing earthquakes. This process is known as a constructive plate margin.

42
Q

The floor of the Atlantic Ocean is getting wider.

(True or False)

A

True

43
Q

Himalayas and Andes are called slab mountains

(True or False)

A

False

44
Q

North American plates are moving apart under the…?

A

Atlantic ocean

45
Q

The amount of energy an earthquake gives out is called

A

Magnitude

46
Q

The rock stores up the pressure as

A

Strain energy

46
Q

The focus of the earthquake is the point where the waves start

(True or False)

A

True

46
Q

Earthquakes are measured using machines called

A

Seismometers

47
Q

There will be lots of smaller earthquakes called

A

Aftershocks

48
Q

Tsunamis can kill people thousands of miles from the

A

epicentre.

49
Q

What can volcanic gas cause

A

acid rain

50
Q

What is a warning system?

A

when an earthquake in the ocean is detected, people are warned through sirens and
loudspeakers to keep them safe.

51
Q

What is a tsunami?

A

Tsunamis, ocean floor earthquakes, cause massive waves traveling 700km an hour, reaching 30m high near coasts, and can kill thousands of miles from the epicentre.

52
Q

Write a note about the tsunami that occurred in the Indian Ocean in 2004

A

The Indo-Australian plate was under pressure, leading to a 1000km earthquake in the Indian Ocean floor on December 26, 2004. The 9.2 Richter scale earthquake caused a tsunami, resulting in 227,000 deaths and thousands of homeless people across fifteen countries.

Y9 QAYREEN STUDY DECK (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions