Brazil And Tropical Rainforests

Question 1

Where are tropical rainforests found, choose one?
A. At latitudes higher than 66.5deg
B. Between 23.5 and 66.5 deg
C. Between the tropics of Cancer and Capricorn, 23.5 deg north and south of the equator

Answer 1

Between the tropics of Cancer and Capricorn, 23.5 deg north and south of the equator

Question 2

How can temperatures in the tropical rainforest be described? Choose one

A. Very variable throughout the year
B. Do not vary much through the year
C. Usually around 15C

Answer 2

Do not vary much through the year. This is because they are found on or near the equator so the sun is always overhead

Question 3

Where are the tallest trees in the rainforest found?

A. In the emergent layer
B. In the canopy
C. In the shrub layer

Answer 3

The tallest trees in a tropical rainforest are found in the emergent layer. The canopy is below the emergent layer.

Question 4

Which rainforest layer is the second highest where most of the plant species are contained?

Answer 4

The canopy is the second highest rainforest layer. Most plant species are contained there.

Question 5

What is one reason why rainforests are so important?

A. They give out carbon dioxide
B. They provide us with oil
C. They are a source of medicines

Answer 5

One reason why rainforests are so important is that they provide us with ingredients for new medicines. They take I. Carbon dioxide and give out oxygen.

Question 6

What are epiphytes?
A. Meat-eating plants that attract insects using smelly nectar and then trap them
B. Flowering plants that grow on tree trunks and branches to get light
C. Vibe-like plants that grow up a tree to reach the light

Answer 6

Flowering plants that grow on tree trunks and branches to get light

Question 7

What are carnivorous plants?

Plants that eat meat
Plants that grow off trees
Plants that are seasonal

Answer 7

Carnivorous plants are meat eating plants that attract insects using smelly nectar and then trap them

Question 8

Where do most rainforest animals live?
On the forest floor
In the trees
In the air

Answer 8

In the trees

Question 9

What type of farming causes deforestation?
Cash cropping
Subsistence farming
Hunter gatherer farming

Answer 9

Cash cropping

Question 10

Why have dams been built in the rainforest?
To provide water
To provide a recreational activity
To provide electricity

Answer 10

Hydro dams have been built to provide electricity, which can be transported to cities far away. The forests have plenty for water with the high rainfall.

Question 11

In 9 points explain why it rains every afternoon in the tropical rainforest

Answer 11

1. The sun rises in the sky by midday
2. The sun heats up the ground
3. Air next to the ground is heated
4. Water evaporates from the ground and the trees
5. Warm air rises
6. Air cools and condensation occurs
7. White cumulus clouds form
8. Cumulonimbus storm clouds form
9. Heavy rain

Question 12

Describe the nutrient cycle in the tropical rainforest

Answer 12

1. Dead leaves and animal waste fall all year round
2. When these decompose they release the nutrients from them
3. The roots of the trees or plants quickly take up the nutrients again
4. The nutrients help the trees and plants to grow

Question 13

Why is the soil so poor in the tropical rain forest?

Answer 13

The soil is poor because the nutrients don’t get a chance to sink in

Question 14

Name the 5 layers of the rainforest from the highest to the lowest

Answer 14

Emergent layer
Canopy
Under story canopy
Shrub layer
Forest floor

Question 15

Where do 2/3rds of the forest’s wildlife live?

Answer 15

In the second-most layer: the canopy

Question 16

What wildlife lives in the rain forest?

Answer 16

Birds, frogs, monkeys, sloths

Question 17

Where is the darkest part of the rain forest?

Answer 17

Forest floor

Question 18

Where is the lightest part of the rain forest?

Answer 18

Emergent layer

Question 19

Which animals live in the emergent layer?

Answer 19

Some birds

Question 20

What is the sunniest part of the rain forest?

Answer 20

Emergent layer

Question 21

Where do smaller trees and vines grow in the rain forest?

Answer 21

Under story canopy

Question 22

Which layer can you find epiphytes?

Answer 22

In the canopy

Question 23

What height are the emergents?

Answer 23

60 metres

Question 24

The understory has smaller trees. Where do they get the light to grow?

Answer 24

They grow in the gaps left where old ones have died

Question 25

What height are the trees in the under storey?

Answer 25

15 metres

Question 26

What is twisted all around the trees in the under story canopy?

Answer 26

Vines

Question 27

Why is it so dark on the forest floor even in the daytime?

Answer 27

No light can get through the trees and the canopies which are overlapping

Question 28

Why do some trees emerge above the canopy?

Answer 28

To get more sunlight to grow

Question 29

Why do so many animals live in the upper canopy?

Answer 29

It is where the fruit is

Question 30

Why do rainforests have an evergreen appearance?

Answer 30

Because the leaves grow back so quickly after others have fallen off. They all fall off at different times to make it energy efficient for the plant to quickly regrow individual leaves

Question 31

What are emergents and why do they grow so tall?

Answer 31

Emergents are trees growing above the canopy to get sunlight

Question 32

How do linear (vines) grow in the rainforest?

Answer 32

By pulling themselves up the trees

Question 33

How do trees deal with the heavy rain that falls in tropical rain forests.

Answer 33

The tree roots absorb the rain water very quickly from the soil

Question 34

Give some facts about the tribes living in the rain forest

Answer 34

People live unidentified in the rainforest in tree huts
Learn to hunt at 5 years old
Eat tarantulas
Find honey as a source of sugar but struggle to get protein
Play music in the form of a water drum
Defence they use blowpipes full of poison
Mimicry to lure the animals in then kill them with the blow pipe