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Science Chapter 4

True/False
Indicate whether the sentence or statement is true or false.
 

 1. 
It is important that materials cycle through the environment because cycling allows materials to be used over and over again without being used up.
 

 2. 
An energy pyramid shows how sunlight flows through an ecosystem.
 

 3. 
There is not a forth-level in the energy pyramid because there is not enough energy for animals to use.
 

 4. 
A producer makes up the second link in most food chains, and they are the largest population.
 

 5. 
A producer makes up the first link in most food chains, and they are the largest population.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 6. 
Biomes are made up of _________.
a.
grasslands
c.
populations
b.
ecosystems
d.
communities
 

 7. 
Ecosystems are made up of _____________.
a.
grasslands
c.
populations
b.
ecosystems
d.
communities
 

 8. 
Communities are made up of ____________.
a.
grasslands
c.
populations
b.
ecosystems
d.
temperate forests
 

 9. 
_______, ______ , _______, and _____ are vital in the health of the whole ecosystem. These are the nonliving things found in an ecosystem.
a.
Air, food, water, and shelter
b.
Air, food, water, and soil
c.
Air, water, sunlight, and food
d.
Air, water, sunlight, and soil
 

 10. 
All the members of the same type of organism are called the ________.
a.
population
c.
community
b.
ecosystem
 

 11. 
A group of living thins in an ecosystem is called a ________.
a.
population
c.
community
b.
ecosystem
 

 12. 
Everything in an ecosystem interacts, regardless of _____.
a.
population
c.
color
b.
size
d.
shape
 

 13. 
How do scientists classify the parts of an ecosystems?
a.
ecosystem, community, population
b.
ecosystem, community, biome
c.
ecosystem, biome, community, population
d.
ecosystem, community, population, individual
 

 14. 
The factors that distinguish one biome from another are the _________ and _________.
a.
climate and population
b.
climate and type of vegetation
c.
climate and ecosystem
d.
ecosystem and type of vegetation
 

 15. 
Sunlight can only reach depths of 220 meters.  This is important for organisms, such as algae, because they need sunlight to __________.
a.
produce food
c.
produce oxygen
b.
produce carbon dioxide
d.
produce more organisms
 

 16. 
Three types of freshwater ecosystems are: _____________.
a.
oceans, rivers, and lakes
c.
lakes, rivers, and wetlands
b.
rivers, lakes, and estuaries
 

 17. 
___________ are classified as producers, consumers, or decomposers.
a.
Ecosystems
c.
Organisms
b.
Individuals
d.
Cells
 

 18. 
A producer makes its own food; producers are _________.
a.
tigers
c.
fungi
b.
plants
d.
bacteria
 

 19. 
A ________ gets energy by eating producers and other organisms; they are animals.
a.
consumers
c.
decomposers
b.
producers
 

 20. 
A ________ breaks down the remains of uneaten plants and animals that have died.
a.
composer
c.
decomposer
b.
producer
 

 21. 
A _______ makes up the first link in most food chains, and they are the largest population.
a.
composer
c.
decomposer
b.
producer
 

 22. 
A ______ consumer only eats producers.
a.
first-level
c.
third-level
b.
second-level
d.
fourth-level
 

 23. 
A ________ consumer eats the first-level consumer.
a.
first-level
c.
third-level
b.
second-level
d.
fourth-level
 

 24. 
A _________ consumer eats the second-level consumer.
a.
first-level
c.
third-level
b.
second-level
d.
fourth-level
 

 25. 
An ________ is an organism that eats plants.
a.
omnivore
c.
carnivore
b.
herbivore
 

 26. 
A __________ is an organism that eats meat.
a.
omnivore
c.
carnivore
b.
herbivore
 

 27. 
An _________ is an organism that eats both plants and meats.
a.
omnivore
c.
carnivore
b.
herbivore
 

 28. 
Each level of the energy pyramid is ______ than the level above it.
a.
larger
c.
equal to
b.
smaller
d.
has no connection
 

Completion
Complete each sentence or statement.
 

 29. 
All of the living and non-living things in an area is a/an __________.
 

 

 30. 
In a certain pond, fish, insects and algae interact with other living things and their surroundings to form a/an __________.
 

 

 31. 
__________ is the type of weather that occurs in an area over a long period of time.
 

 

 32. 
In __________ biomes, the leaves of aspen trees are green in the summer and yellow in the autumn.
 

 

 33. 
__________ experience periods of heavy rain as well as distinct dry periods.
 

 

 34. 
Hot, humid weather is typical of __________ all year long.
 

 

 35. 
A/An __________ describes how energy in an ecosystem flows from one organism to another.
 

 

Short Answer
 

 36. 
List all 6 of the major Biomes. Put in alphabetical order.
 

Essay
 
 
Checking Main Ideas
Answer the questions using complete sentences.
 

 37. 
Name three living and three non-living things found outside your classroom window.
 
 
Using Inquiry Skills
Answer the questions using complete sentences.
 

 38. 
Use Models  Arrange these organisms in a food web: algae, bear, bullfrog, earthworm, hawk, owl, trout, water strider
 
 
Thinking Critically
Answer the questions using complete sentences
 

 39. 
Analyze Data  Identify the biome indicated by the  rainfall records in the chart. Describe one plant and  one animal that are likely to live in this climate.

chapter_4_files/i0470000.jpg
 

BONUS
 

 40. 
Name one animal in each level of the energy pyramid.
 

 41. 
How do Venus flytraps differ from most other plants?
 

 42. 
What percent of the Earth’s surface is covered by oceans?
 

 43. 
Why are small fish important in ocean ecosystems?     
 

 44. 
What percent of energy at one level passes to the next level of the energy pyramid?
 



 
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