North Carolina Science Grade 6

Chapter 13: The Nonliving Environment

The Nonliving Environment

1.
Which of these is part of the nitrogen cycle?
A)Nitrogen is absorbed by plants when they die.
B)Nitrogen is produced by living organisms.
C)Nitrogen goes from the atmosphere to the soil.
D)Nitrogen is removed from soil by animal wastes.
2.
The air that surrounds Earth is called __________.
A)humus
B)the core
C)the atmosphere
D)respiration
3.
The process that is almost the reverse of photosynthesis is __________.
A)fertilization
B)respiration
C)metamorphosis
D)migration
4.
Where would you find organisms that produce food by chemosynthesis?
A)in a deep part of the ocean
B)in desert biomes
C)in treetops
D)in deciduous rain forest biomes
5.
You pour a glass of water. After some time, drops of water appear on the outside of the cup. What is this an example of?
A)biotic factors
B)the nitrogen cycle
C)photosynthesis
D)condensation
6.
Which group makes up the largest level of an energy pyramid?
A)consumers
B)producers
C)omnivores
D)carnivores
7.
An ecosystem with plenty of __________ tends to be able to support a larger number of living organisms.
A)herbivores
B)bacteria
C)humans
D)water
8.
Trees at higher elevations usually are __________ than those at sea level.
A)taller
B)affected more by high temperatures
C)filled with more fruit
D)shorter
9.
What is created when colder air sinks below warmer air and pushes warmer air upward?
A)humus
B)precipitation
C)omnivores
D)air currents
10.
Consumers are organisms that cannot __________.
A)photosynthesize
B)survive
C)reproduce
D)evaporate
11.
Which of these is the correct order of a food chain?
A)A wolf is eaten by grass, which is eaten by a rabbit.
B)A rabbit is eaten by a wolf, which is eaten by grass.
C)A rabbit is eaten by grass, which is eaten by a wolf.
D)Grass is eaten by a rabbit, which is eaten by a wolf.
12.
Which of these makes its own food?
A)carnivores
B)water
C)soil
D)producers
13.
Which of these is true?
A)Energy can be transferred form one organism to another.
B)Producers never make their own food.
C)Consumers produce their own food.
D)Energy is never converted from one form to another.
14.
One possible result of extra carbon dioxide in the atmosphere is __________.
A)a decrease in the amount of nitrogen in the soil
B)a decrease in the amount of water on Earth
C)an increase in the number of carnivores on Earth
D)a rise in average temperatures on Earth
15.
Grass uses photosynthesis to produce __________.
A)water
B)sugar molecules
C)fewer offspring
D)evaporation
16.
Which of these organisms is the first step in a food chain?
A)mammals
B)producers
C)consumers
D)amphibians
17.
Which of these affects the temperature of a region?
A)latitude
B)photosynthesis
C)the number of carnivores
D)the amount of humus in the soil
18.
DNA in organisms is formed by ___________.
A)acid-base reactions
B)nucleic acids
C)biotic factors
D)hydrochloric acid
19.
Which of these is an abiotic factor?
A)a raccoon
B)a beetle
C)sunlight
D)a pine tree
20.
Rainfall patterns can be affected by __________.
A)clay in the soil
B)the abundance of animals
C)the presence of mountains
D)the availability of plant life
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.