Grade 11 Earth Science Worksheet: Ecosystems (Fill in the Blank)

Ecosystems Fill in the Blank

Grade 11 Earth Science Ecosystems Fill in the Blank Advanced 20 Questions 7 Views

Classroom Worksheet

Grade 11 Earth Science Worksheet: Ecosystems (Fill in the Blank)

Ecosystems Fill in the Blank

Name____________________________

Date________________

Score______ / 20

Grade: Grade 11

Subject: Earth Science

Topic: Ecosystems

Time: 20 Minutes

Difficulty: Advanced

Questions: 20

Instructions:
Directions: Fill in each blank with the best term, phrase, or example. Questions increase in difficulty. Use correct Earth science vocabulary and be specific.

Skills Practiced:

Ecosystems
Earth Science
Critical Thinking
Problem Solving

1Question

An ecosystem is made up of living organisms and the nonliving ________ they interact with.

2Question

In an ecosystem, plants and algae are called ________ because they make their own food.

3Question

Organisms that eat other organisms for energy are called ________.

4Question

Organisms such as fungi and many bacteria that break down dead material are called ________.

5Question

The first trophic level in most food chains is made up of ________.

6Question

A sequence showing how energy moves from one organism to another is called a ________ chain.

7Question

A group of the same species living in the same area is called a ________.

8Question

All the different populations living together in one area form a ________.

9Question

The role an organism plays in its ecosystem, including how it gets energy, is its ________.

10Question

The movement of energy through an ecosystem begins with energy from the ________.

11Question

Only about 10 percent of energy is usually transferred from one trophic level to the next; the rest is lost as ________.

12Question

A diagram that shows many interconnected food chains is called a food ________.

13Question

The process by which water changes from a liquid to a gas and enters the atmosphere is called ________.

14Question

The cycling of elements such as carbon, nitrogen, and water through living and nonliving parts of Earth is known as a ________ cycle.

15Question

In the carbon cycle, plants remove carbon dioxide from the atmosphere through ________.

16Question

Nitrogen-fixing bacteria convert nitrogen gas into a form plants can use, such as ________.

17Question

A species that has a much larger effect on an ecosystem than would be expected based on its abundance is called a ________ species.

18Question

The gradual change in species composition over time in an ecosystem is called ecological ________.

19Question

The total amount of living material in a given area is called ________.

20Question

When a nonnative species spreads rapidly and harms native species, it is called an ________ species.

Answer Key

#	Answer
1	environment
2	producers
3	consumers
4	decomposers
5	producers
6	food
7	population
8	community
9	niche
10	Sun
11	heat
12	web
13	evaporation
14	biogeochemical
15	photosynthesis
16	ammonium
17	keystone
18	succession
19	biomass
20	invasive