Unit 4 Science Test

Question 1

The surroundings of anything is an

Answer 1

environment

Question 2

All the populations living in the same place is a

Answer 2

community

Question 3

A group of one kind of living thing living in a certain place is a

Answer 3

population

Question 4

All the living and non-living things in a certain place is an

Answer 4

ecosystem

Question 5

The specific place a plant or animal lives in an ecosystem is a

Answer 5

habitat

Question 6

To collect materials and make them into new items is to

Answer 6

recycle

Question 7

______ describes an organism whose population is in danger of dying out

Answer 7

Endangered

Question 8

________ describes an organism that used to live on earth but whose population completely died out

Answer 8

Extinct

Question 9

To make less of something is to

Answer 9

reduce

Question 10

Something an organism has that helps it survive in its ecosystem is an

Answer 10

adaptation

Question 11

Match the words with the descriptions

an individual wildflower

Answer 11

Organism

Question 12

Match the words with the descriptions

all the wildflowers in a field

Answer 12

population

Question 13

Match the words with the descriptions

all the wildflowers, grass, mice, moles, and other plants and animals that live together in the same field

Answer 13

Community

Question 14

Corn plant –> caterpillar –> bluebird –> owl

What describes the role of the corn plant?
a. producer
b. consumer
c. prey
d. all of these

Answer 14

a. producer

Question 15

Corn plant –> caterpillar –> bluebird –> owl

What describes the role of the bluebird
a. consumer
b. prey
c. predator
d. all of these

Answer 15

d. all of these

Question 16

Corn plant –> caterpillar –> bluebird –> owl

What describes the role of the owl?
a. producer
b. consumer
c. decomposer
d. all of these

Answer 16

b. consumer

Question 17

Corn plant –> caterpillar –> bluebird –> owl

There is an arrow going from the caterpillar to the bluebird because
a. the energy goes from the caterpillar to the bluebird
b. the energy goes from the bluebird to the caterpillar
c. the caterpillar eats the corn plant
d. the caterpillar eats the bluebird

Answer 17

a. the energy goes from the caterpillar to the bluebird

Question 18

Corn plant –> caterpillar –> bluebird –> owl

If the bluebird population was removed, what might happen to the owl population?
a. It would get smaller
b. It would get bigger
c. It would stay the same

Answer 18

a. it would get smaller

Question 19

Corn plant –> caterpillar –> bluebird –> owl

Which of these would cause the bluebird population to get smaller?
a. The owl population is removed
b. The caterpillar population is removed
c. The caterpillar population gets bigger
d. The corn plant population gets bigger

Answer 19

b. The caterpillar population is removed

Question 20

_______ ecosystems are dry and hot with very little rain

Answer 20

Desert

Question 21

_____ ecosystems have plenty of rain to water trees

Answer 21

Forest

Question 22

_____ ecosystems are home to lions, elephants, and cheetahs

Answer 22

Grassland_

Question 23

_____ ecosystems are cold with a lot of ice

Answer 23

Tundra

Question 24

_____ ecosystems are home to algae, reeds, fish, and coral.

Answer 24

Water

Question 25

Which of these is an example of a biotic thing in an ecosystem? a. tree b. sunlight c. water d. air

Answer 25

a. tree

Question 26

An organism that eats dead and decaying things is an _______

Answer 26

decomposer

Question 27

An animal that eats other animals is a _____

Answer 27

consumer

Question 28

A ____ organism that makes its own food from light and water

Answer 28

producer

Question 29

What adaptation does this polar bear have that helps it stay warm in the cold?

Answer 29

Thick fur

Question 30

What adaptations does a duck have that helps it live on a lake?

Answer 30

webbed feet

Question 31

What can change an ecosystem? a. floods and drought b. digging for rocks, minerals, or coal c. building d. all of these

Answer 31

d. all of these

Question 32

What happens when people cut down forests?

Answer 32

Many different organisms lose their habitats

Question 33

What can cause plant and animal populations in an ecosystem to drop to dangerous levels?

Answer 33

rapid changes