Sec 1 GE Ch5-2 Rainforests

Sec 1 GE Ch5-2 Rainforests

By Adam Chan

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Tropical climates receive abundant sunlight and

high rainfall

throughout the year.​

Characteristics of rainforests

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Found in the tropical climate zone in countries like:

South America, Africa and Southeast Asia​

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Largest rainforest:

AMAZON rainforest found in South America (6,000,000km2)​

Tropical Rainforest

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​https://www.youtube.com/watch?v=3vijLre760w

Video: Intro to Tropcial Rainforests

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Quiz Time!

Have you been paying attention to the video?

Do you remember the details?​ 4 questions.

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Multiple Choice

Rainforests CANNOT be found on which continent?

• Africa

• Antarctica

• Australia

• Asia

Multiple Select

TROPICAL RAINFORESTS are found between ________ and ________.

(Pick 2 answers)

• Tropic of Capricorn

• Equator

• Tropic of Cancer

• Tropic of Camper

Multiple Choice

Rainforests are home to ___ of the world's plant and animal species.

• 40%

• 50%

• 60%

• 90%

Multiple Choice

Which is NOT true about the rainforest?

• Absorb solar radiation

• Absorb cosmic radiation

• Create breathable air for people

• Absord carbon dioxide

(1) Rainforest plants are EVERGREEN

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They do not shed their leaves at particular times in the year​

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Continuously grow new leaves to replace older ones​

Characteristics of rainforests

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​Tropical Rainforests - remains green throughout the year (EVERGREEN)

Temperate forests leaves turn yellow in Autumn and fall off the trees in winter.​ (DECIDUOUS)

(2) Rainforests have a very large variety of plant species

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More than any other ecosystem in the world

Characteristics of rainforests

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e.g. Tempinis Tree

e.g. Tembusu Tree​

e.g. Banana tree

e.g. Rubber Tree​

(3) Rainforests trees have a distinct 3 layer vertical forest structure

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Intense competition for sunlight causes trees in the rainforest to grow as tall as possible​

Characteristics of rainforests

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(3) Rainforests trees have a distinct 3 layer vertical forest structure

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3 layers:

Emergent

Canopy

Undergrowth​

Characteristics of rainforests

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EMERGENT layer

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Tallest trees grow

up to 30m or more

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Characteristics of rainforests

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CANOPY layer

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Most other trees grow up to 20m-30m in height

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Trees grow very close to each other so their crowns interlock to form a continuous layer of branches and leaves​

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Canopy blocks 97% of sunlight from reaching the forest floor​

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Characteristics of rainforests

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UNDERGROWTH layer

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Not many plants grow here as there is very little sunlight

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Smaller plants and seedlings of taller trees that can grow in the shade​

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Characteristics of rainforests

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Some plants fround in the rainforest

​https://tourthetropics.com/guides/most-fascinating-plants-in-the-amazon-rainforest/

Quiz Time

How much can you remember?

Multiple Choice

A tropical rainforest tree does not shed their leaves at the same time. This feature is called...

• confiferous

• decidious

• evergreen

• neverbrown

Multiple Choice

Trees in the emergent layer are more than __ in height

• 20m

• 30m

• 50m

• 80m

Multiple Choice

The canopy layer prevents ______ from reaching the forest floor

• sunlight

• rainwater

• big birds

• seedlings