AnswersMO-Earth and Space Science ASpheres of Earth

Spheres of Earth — Unit test Answers

15 verified answers
1
Free Preview

Which statement describes abiotic factors in an environment?

A
Chickens run around a farm.
B
Soil retains water and nutrients.
C
Bacteria use energy to reproduce.
D
Plants compete for sunlight in an ecosystem.
2
Free Preview

What determines the length of a geologic time period?

A
fossil record
B
material density
C
meteors and rocks
D
radioactive materials
3

What is the relationship between the rate at which molten material cools and a mineral's crystals?

A
The faster the cooling, the larger the crystals.
B
The slower the cooling, the larger the crystals.
C
The rate at which molten material cools does not affect crystal shape.
D
The rate at which molten material cools does not affect crystal size.
4

Which statement describes the law of superposition?

A
Sedimentary rocks were originally in horizontal layers.
B
In horizontal rock layers, each layer is younger than the one below it.
C
Rock layers must be in existence before something can happen to them.
D
Rocks that are not in horizontal layers were shifted by some geologic event.
5

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

A
Plant roots take in water through their roots.
B
Plants take in carbon dioxide from the air.
C
Energy stored in plants is transferred to humans and animals that eat them.
D
Plants make food through photosynthesis and release oxygen into the atmosphere.
6

Which process forms sedimentary rock in the rock cycle after sediments accumulate and combine?

A
Sediments undergo heat and pressure.
B
Sedimentary rock weathers and erodes.
C
Sediments compact and cement together.
D
Sedimentary rock experiences cooling and melting.
7

Which important event in Earth’s history occurred during the Jurassic period?

T
The first birds emerged on Earth.
M
Mammals were in search of food.
A
Animals with shells emerged on Earth
T
Treelike ferns first began to grow and populate.
8

Which correctly lists three characteristics of minerals?

s
solid, crystal structure, definite chemical composition
o
organic, crystal structure, definite chemical composition
h
human-made, solid, organic
c
crystal structure, definite chemical composition, human-made
9

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

A
an interaction within the geosphere
B
an interaction within the hydrosphere
C
an interaction between the biosphere and the geosphere
D
an interaction between the biosphere and the atmosphere
10

Which phrase best describes igneous rocks?

A
form when lava and magma cool
B
accumulate sediments following erosion
C
require heat and pressure to be formed
D
consist of many sediment layers
11

Sydney drew a flow chart to illustrate the nitrogen cycle.

Question illustration
X
X: Producers undergo photosynthesis.Y: Nitrogen compounds are released into the air.
X
X: Nitrogen compounds are released into the air.Y: Producers undergo photosynthesis.
X
X: Free nitrogen is in the atmosphere.Y: Producers absorb nitrogen compounds through their roots.
X
X: Producers absorb nitrogen compounds through their roots.Y: Free nitrogen is in the atmosphere.
12

Study the image of this rock.

Question illustration
A
jagged
B
oval
C
round
D
smooth
13

Which phrase describes one main feature of the atmosphere?

p
protects Earth’s surface
i
includes organisms in the air, on land, and in water
c
consists of rocks, minerals, landforms, and Earth’s interior
c
comprises oceans, lakes, rivers, streams, and groundwater
14

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

A
Scientists determined the approximate age of fossils from the moon and Earth.
B
Scientists used radioactive dating to study the age of material from the moon and Earth.
C
Scientists explored the cycle of condensation and evaporation over time on the moon and Earth.
D
Scientists analyzed the content of gases that were part of the atmospheres on the moon and Earth.
15

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

A
Devonian
B
Neogene
C
Paleogene
D
Quaternary

Did you find these answers helpful?

More from this Course

Quiz
12 verified answers

Unit Test

Quiz
15 verified answers

Unit Test

Quiz
15 verified answers

Unit Test

Spheres of Earth — Unit test Answers — MO-Earth…