wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Science - Term 4 - Revision

Total questions: 47

Worksheet time: 24mins

Name
Class
Date
1.

Use the photo of the Otter to answer the question
The abiotic factors in the Otter's ecosystem include

a)

air and water

b)

air, water, sunlight

c)

kelp and crabs

d)

water and kelp

2.

A tree makes its own food using matter from the air and soil. A tree is a

a)

decomposer

b)

producer

c)

consumer

d)

producer and consumer

3.

....................... is all the living and non living components in a particular area

a)

ecosystem

b)

interact

c)

community

4.

When two things ......................., they affect one another

a)

fight

b)

interact

c)

hide

5.

.......................... factors are the non-living parts of an ecosystem.

a)

Abiotic

b)

Biotic

6.

.......................... factors are the living parts of an ecosystem.

a)

Abiotic

b)

Biotic

7.

The components of the ecosystem do not interact

a)

b)

8.

Abiotic Factors include air, water, rocks, soil, sunlight, and temperature

a)
b)
9.

All the organisms living together in an ecosystem make up a community

a)
b)
10.

Ecosystems can be any size. They can be as small as a drop of water or large as an entire forest.

a)
b)
11.

An example of an interaction between biotic and abiotic factors in an ecosystem

a)

The grasshopper eats the grass

b)

The fish use water to swim

12.

Organisms need ...................... to grow, reproduce, and repair damaged body parts

a)

matter

b)

energy

13.

..................... is an organism that makes its own food using non-food matter and energy from the sun.

a)

Producers

b)

Decomposers

c)

Consumers

14.

..................... are organisms that breakdown or decompose other organism's bodies after they die.

a)

Producers

b)

Decomposers

c)

Consumers

15.

..................... are organisms that can not produce their own food and must eat other organisms.

a)

Producers

b)

Decomposers

c)

Consumers

16.

..................... are tiny animals that eats even smaller producers.

a)

Zooplankton

b)

Phytoplankton

17.

......................... and ......................... are organisms that are too small to see

a)

Microbes

b)

Bacteria

c)

Earthworms

d)

Flies

18.

..................... are microscopic organisms.

a)

Zooplankton

b)

Phytoplankton

19.

..................... shows how matter and energy flow from one organism to another.

a)

Food chain

b)

Food web

20.

To get a better picture of the feeding relationships in an ecosystem, use ........................

a)

Food chain

b)

Food web

21.

Decomposers combine the wastes that animals produce.

a)
b)
22.

Plants are producers.

a)
b)
23.

Many decomposers are microbes

a)
b)
24.

The large decomposers include bacteria and fungi

a)
b)
25.

The too-small decomposers include earthworms and flies.

a)
b)
26.

Some consumers eat only producers, some eat only other consumers, and some eat both.

a)
b)
27.

A food chain is a good tool for describing the transfer or movement of matter and energy in an ecosystem.

a)
b)
28.

A food web is a set of interconnected food chains.

a)
b)
29.

Consumers always represent the 1st link in a food chain.

a)
b)
30.

Ocean food chains usually begin with phytoplankton.

a)
b)
31.

Zooplankton is the consumers in the ocean food chains.

a)
b)
32.

Humans fill the role in some food chains.

a)
b)
33.

The producers in the ocean food chain are phytoplankton.

a)
b)
34.

The final link in a food chain can be an animal that is rarely in danger of being eaten.

a)
b)
35.

All ecosystems consist of abiotic and biotic components that do not interact.

a)
b)
36.

Changes to ecosystems differ in how they affect ecosystems.

a)
b)
37.

..................... refers to a series of changes in a community.

a)

Succession

b)

Stable

c)

Competition

38.

A ..................... ecosystem can meet the needs of multiple species or kinds of organisms.

a)

Succession

b)

Stable

c)

Competition

39.

..................... occurs when organisms in an ecosystem need the same resources.

a)

Succession

b)

Stable

c)

Competition

40.

..................... succession is when plants and animals start living on new land.

a)

Primary

b)

Secondary

41.

..................... succession is when plants and animals return to disturbed or damaged land.

a)

Primary

b)

Secondary

42.

Stable means steady or changing.

a)
b)
43.

In any ecosystem, organisms compete.

a)
b)
44.

Competition is a problem unless something causes it to become unbalanced.

a)
b)
45.

Eats-only producers are ............ and ..............

a)

Green Sea Turtle

b)

Mackerel

c)

Zooplankton

d)

Herring

e)

Blue Whale

46.

Eats-only consumers are ............, ............, ............, ............, ............, and ..............

a)

Green Sea Turtle

b)

Mackerel and Tiger shark

c)

Seal and Squid

d)

Herring

e)

Blue Whale

47.

Eats both ......................................

a)

Green Sea Turtle

b)

Mackerel and Tiger shark

c)

Seal and Squid

d)

Herring

e)

Blue Whale