Free Printable Extinction

Worksheets

Extinction

Total questions: 13

Worksheet time: 26mins

Name

Class

Date

According to most scientists, what is the biggest cause of most mass extinctions?

overhunting

evolution of new species to replace old ones

major change in environment/habitat

asteroid impact

Which of these describes a species that has become extinct?

fewer members of the species are dying than being born

more members of the species are dying than being born

very few members of a species are alive

all members of a species have died

Species that are in danger of becoming extinct are called __________.

endangered

not lucky

extinct

in a jam

When a plant or animal becomes extinct, it is gone _______.

forever

until next week

for 5 years

to sleep

Humans are causing extiction in which ways?

By over hunting animals for food or products.

By destroying the natural habitat of species.

By polluting the environments of the world.

All of the above.

Which is LEAST LIKELY to push a species toward extinction?

a. Cutting down entire forest

b. Putting animals in a zoo

c. Polluting mountain streams

d. Introducing new species to an ecosystem with no known natural predator

What would most likely happen if a bird species had fewer and fewer offspring each year?

The species would move to another ecosystem.

There would be too many birds.

The species would become endangered.

Predators of the species would increase in number.

True or False: Human beings are wiping out species much faster than nature creates them, causing what scientists call a "6th extinction"

true

false

Which of the following species is extinct?

woolly mammoth

giant panda

bald eagle

green sea turtle

10.

Which of the following is NOT a reason a species may become extinct?

competition

reproducing

habitat loss

overhunting

11.

When scientists discuss the Sixth Extinction, they are referring to which pattern in the rate of extinction?

an increased rate caused by human activity

an increased rate caused by volcanic activity

a fluctuating rate caused by human activity

a fluctuating rate caused by volcanic activity

12.

How many mass extinctions have occurred on Earth?

13.

Evidence of an animal or plant that lived a long time ago on Earth is called a ________.

fossil

tiger

extinct

endangered

Reset

Extinction

Total questions: 13

Worksheet time: 26mins

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