Work Flashcards

1
Q

What is the definition of a natural hazard?

A

A natural event with the potential to cause harm to people or the environment.

Example sentence: A hurricane is a natural hazard that can cause significant damage.

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2
Q

What is the outer layer of the earth called?

A

The outer layer of the earth is called the crust (bonus if oceanic/continental mentioned)

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3
Q

What do we call a piece of the earth’s crust?

A

A plate

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4
Q

Which type of plate boundary is caused when plates scrape past each other?

A

A conservative plate boundary. A famous one is the San Andrea fault in California

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5
Q

Which scale is currently used to measure the magnitude of earthquakes?

A

The Richter Scale (don’t accept Mercalli)

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6
Q

Which piece of equipment is used to record the power of earthquakes?

A

A Seismometer. The trace produced is known as a seismograph.

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7
Q

What do all of the following have in common: hurricane? Cyclone? Typhoon?

A

They are all names given to the same natural event – a tropical storm.

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8
Q

Describe the main location of tropical storms across the world?

A

Tropical storms are mainly located in a narrow band along the equator and extending to the Tropic of Cancer and Tropic of Capricorn. Credit for Atlantic/Pacific/Caribbean

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9
Q

What temperature does the sea need to reach for a tropical storm to form?

A

Above 26.5c/27c

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10
Q

What were the immediate impacts of Typhoon Haiyan?

A

Typhoon Haiyan damaged 1.1 million houses, destroyed 33 million coconut trees (a major source of livelihoods), and disrupted the livelihoods of 5.9 million workers. Overall damage is estimated at $5.8 billion. More than 7,000 people were killed by Typhoon Haiyan.1.9 million people were left homeless and more than 6,000,000 displaced. There were outbreaks of disease due to the lack of sanitation, food, water, shelter, and medication.

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11
Q

What is the difference between the greenhouse effect and global warming?

A

The greenhouse is a naturally occurring process which ensures the earth is kept at a temperature which supports life. Global warming is a man-made environmental issue primarily caused by the increase of greenhouse gases caused by the burning of fossil fuels.

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12
Q

Which four gases are most responsible for global warming?

A

Carbon dioxide, Methane, Nitrous Oxide and CFC gases.

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13
Q

True or false: Britain’s weather is getting more extreme?

A

True

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14
Q

What were the causes of the extreme weather event known as ‘the Beast from the East’?

A

Sudden stratospheric warming which brought very cold air from the east (Siberia). This coincided with Storm Emma which brought warm moist air from the south-west.

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15
Q

What is the difference between mitigation and adaptation in relation to climate change?

A

Mitigation is actions which seek to reduce the amount of greenhouse gases produced. Adaptation is learning how to cope with the changes to our climate.

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16
Q

What are 2 major effects of climate change?

A

Sea Level rise/Ice-caps melting/more extreme weather

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17
Q

Carbon dioxide is the most prevalent greenhouse gas. True or false?

18
Q

What is the term for where a river begins?

A

The source

19
Q

What is the term for where 2 rivers meet?

A

A confluence

20
Q

What is the term for a small stream that joins the main river?

A

A tributary

21
Q

Name 4 processes of erosion that take place in a river.

A

Corrosion, Corrasion/solution, Abrasion, Hydraulic action

22
Q

Name the 4 processes by which a river can transport material?

A

Saltation, Traction, Suspension, solution

23
Q

What is the thalweg on a river?

A

The fastest flow (usually in the centre of a straight section of river)

24
Q

Does water flow fastest on the inside or outside of a meander?

A

Outside bend

25
What is the name given to the point where the land meets the sea?
Coast
26
What is the difference between a destructive and a constructive wave?
Destructive waves are high, have a powerful backwash and weak swash. They mostly occur in winter. Constructive waves are lower, have a strong swash, weak backwash and mostly occur in the summer.
27
What is the name of the process by which waves move material along a beach?
Longshore Drift
28
What is a discordant coastline?
Where alternating bands of hard and soft rock lay at right angles to the coastline
29
What are the main landforms created by the sea at a discordant coastline?
Headlands and bays, crack, cave, arch, stack, stump.
30
What is the difference between hard and soft engineering when defending a coastline from erosion?
Hard engineering uses man-made structures to defend against the sea (sea wall, gabions, groynes etc). Soft-engineering works with the coasts natural processes
31
What is a discordant coastline?
Where alternating bands of hard and soft rock lay at right angles to the coastline ## Footnote Example: Jurassic Coast in the UK
32
What are the main landforms created by the sea at a discordant coastline?
Headlands and bays, crack, cave, arch, stack, stump. ## Footnote None
33
What is the difference between hard and soft engineering when defending a coastline from erosion?
Hard engineering uses man-made structures to defend against the sea (sea wall, gabions, groynes etc). Soft-engineering works with the coasts natural processes. ## Footnote None
34
What is an ecosystem?
A community of plants and animals living interdependently with biotic and abiotic factors. ## Footnote None
35
What is the difference between biotic and abiotic factors?
Biotic factors are living things (plants, animals, insect), abiotic are not (climate, rainfall, temperature) ## Footnote None
36
What is the difference between a food chain and a food web?
A food chain is linear, a food web shows all linkages in an ecosystem and is more complex ## Footnote None
37
What is a primary consumer?
Something that derives its energy from the source – plants/vegetation. ## Footnote None
38
Describe the location of the earth’s remaining rainforests.
Rainforest can be found along the equator, and between the tropics of cancer and Capricorn. They can be found in Brazil, Congo Basin, Indonesia etc ## Footnote None
39
What plant adaptation can you see here and why is it needed?
This is a drip tip, used by plants to quickly shed the heavy rainfall to prevent the leaves from being damaged by the rain. ## Footnote None
40
What plant adaptation can you see here and why is it needed?
This is a buttress root. They are very wide and stand above the ground to give the tall, 40 metre trees the support that they need. ## Footnote None
41
Where does the word ‘tundra’ get its name from?
The word tundra comes from the Finnish word ‘tunturia’ meaning treeless land. ## Footnote None
42
What is permafrost and what challenges does it cause in cold environments like Alaska?
Permafrost is permanently or semi-permanently frozen ground. The problems caused are that in some areas, and with the impact of climate change, the upper layer can thaw in the short summer months. This means that any structures built on this layer can sink into the thawed ground damaging buildings and roads. ## Footnote None