Cycles of Matter — Unit test Answers

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Which are abiotic factors as well as basic needs that living things compete for?

bacteria and water

fungi and bacteria

pollen and sunlight

sunlight and water

Which period belongs to the Paleozoic era and not the Cenozoic era?

Devonian

Neogene

Paleogene

Quaternary

Which phrase describes a population?

a group of different communities in an area

organisms of the same species living in an area

nonliving things that interact with living things in a region

organisms that belong to the same community within a region

Which statement accurately describes a half-life?

A rock’s size is determined by half-life.

All stable and unstable elements have a half-life.

An atom of an element becomes half its original size in a half-life.

A half-life is the time required for half of a radioactive element to decay.

The diagram illustrates the water cycle.

Which landform is part of the cryosphere?

glacier

lake

ocean

river

Which best explains how scientists confirmed that the moon formed around the same time as Earth?

Scientists determined the approximate age of fossils from the moon and Earth.

Scientists used radioactive dating to study the age of material from the moon and Earth.

Scientists explored the cycle of condensation and evaporation over time on the moon and Earth.

Scientists analyzed the content of gases that were part of the atmospheres on the moon and Earth.

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