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Law Of Conservation Of Mass
Test Description: FCAT Practice
Instructions: Answer all questions to get your test result.
1) What does the law of conservation of energy state?
A
Organisms save the energy that they create.
B
Energy cannot be created or destroyed.
C
Organisms change energy into mass.
D
It is important to use as little energy as possible.
2) Which of these statements is true of ecosystems?
A
Matter lost by one ecosystem is gained by the surrounding environment.
B
Air cannot be used by organisms once the air moves out of an ecosystem.
C
Animals do not travel from one ecosystem to another ecosystem.
D
The total amount of energy in an ecosystem does not change.
3) A coral reef is damaged during a hurricane. The waves and currents move broken pieces of coral onto the beach. What happened to the matter in the broken pieces of coral?
A
It is still part of the coral reef ecosystem.
B
It became part of the beach ecosystem.
C
It was removed from the environment.
D
It was lost due to the energy in the waves.
4) Saw grass takes in light energy during photosynthesis. What happens to most of this energy?
A
It is stored as chemical energy.
B
It is transferred to organisms that eat the grass.
C
It disappears as it is used up by the plant.
D
It is used to help the saw grass grow and reproduce.
5) Select the phrase that best describes a consumer in a food chain.
A
an organism that gets its energy by eating plants or animals
B
an organism that breaks down dead plants and animals
C
an organism that converts light energy into chemical energy
D
an organism that is at the bottom of the food chain
6) Select the phrase that best describes a decomposer in a food chain.
A
an organism that gets its energy by eating plants or animals
B
an organism that breaks down dead plants and animals
C
an organism that converts light energy into chemical energy
D
an organism that is at the bottom of the food chain
7) Energy is transferred between certain organisms in an ecosystem. Which of these statements explains why the sea grass is a producer?
A
It releases nutrients into the soil.
B
It is eaten by other organisms.
C
It creates energy needed by the ecosystem.
D
It uses energy from the sun to make food.
8) Organisms all perform activities that allow them to survive. Which of these activities is a way that organisms get the energy they need to grow, breathe, and move?
A
flee from predators
B
exercise
C
consume other organisms
D
generate body heat
9) How do organisms get the energy they need?
A
Plants do not require energy because they do not move, and animals get energy by performing exercise.
B
Plants break down the glucose they produced in photosynthesis, and animals get energy from eating other organisms.
C
Plants get energy from fertilizers, and animals get energy by drinking water.
D
Plants get energy from glucose produced in the soil, and animals get energy directly from sunlight.
10) A freshwater marsh is a type of ecosystem. Grasses, fish, wading birds, frogs, and alligators live together in freshwater marshes. Pieces of decaying material sink to the bottom of the marsh. In which of these places can carbon be found in the marsh?
A
in living things only
B
in living things and decaying materials only
C
in the atmosphere, water, living things, and decaying materials
D
in the atmosphere and water only
*select an answer for all questions
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