Answers 2001310 Earth Science Sem 1 - ReevesSpheres of Earth

Spheres of Earth — Unit test Answers

12 verified answers2 views

Free Preview

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

Devonian

Neogene

Paleogene

Quaternary

Free Preview

Which statement describes abiotic factors in an environment?

Chickens run around a farm.

Soil retains water and nutrients.

Bacteria use energy to reproduce.

Plants compete for sunlight in an ecosystem.

Study the timeline.

5 million years

200 million years

1.5 billion years

4.5 billion years

Which phrase describes faults?

cause gaps in the geologic record

cause rocks to break and move

are older than surrounding rocks

are igneous rocks that form beneath Earth’s surface

Humans’ use of rocks and minerals as building materials is an example of which interaction?

an interaction within the geosphere

an interaction within the hydrosphere

an interaction between the biosphere and the geosphere

an interaction between the biosphere and the atmosphere

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.

Which statement describes potassium-argon dating?

Potassium-40 decays into argon gas over time.

Argon breaks down into other elements and compounds.

Potassium-40 becomes stable when trapped in rocks.

Argon is unstable and will decay into potassium-40 over time.

The diagram illustrates radioactive decay.

Structure 1 is an unstable atom that turns into structure 2, a new atom.

Structure 1 is a stable element that breaks down into structure 2, an unstable element.

Structure 1 is a radioactive element that loses particles to create structure 2, released energy.

Structure 1 is a radioactive atom that decays into structure 2, half of the original unstable element.

Which landform is part of the cryosphere?

glacier

lake

ocean

river

Which phrase describes one main feature of the atmosphere?

protects Earth’s surface

includes organisms in the air, on land, and in water

consists of rocks, minerals, landforms, and Earth’s interior

comprises oceans, lakes, rivers, streams, and groundwater

The image shows sedimentary rock layers.

Which statement describes an interaction between the biosphere and the hydrosphere?

Plant roots take in water through their roots.

Plants take in carbon dioxide from the air.

Energy stored in plants is transferred to humans and animals that eat them.

Plants make food through photosynthesis and release oxygen into the atmosphere.

Which method preserves an image of a leaf?

The leaf turns into rock over time.

Tree sap flows over the leaf and preserves it.

Sediment covers the leaf and leaves an imprint on the rock.

As the leaf decomposes, carbon from the leaf is left on the rock.

Which is an example of a trace fossil?

animal burrow

skin of organism

preserved bone

petrified wood

Study the timeline.

5 million years

200 million years

1.5 billion years

4.5 billion years

Which event is most likely if an index fossil is found in a layer at location 1, but the layer and index fossil are not found at location 2 nearby, which is known to be the same relative age?

The layer at location 2 is too old to contain fossils.

The locations were too close together.

The organism did not exist at location 2.

The layers at location 2 formed much earlier than those at location 1.

The image shows locations of fossils from different geologic periods in Virginia.Which association correctly links the time period with the location of the fossils?