Science CBA Unit 3 Review

In some areas of Texas, solid layers of rock called bedrock are beneath a thin layer of soil.

Trees need to grow long, deep roots to get lots of water and hold the tree in place. Based on the information above, are the areas in Texas with bedrock beneath the soil a good place for trees to grow?

• Trees will grow well with bedrock because the roots can wrap around the rock.

• Trees will not grow well with bedrock because the roots will not grow deep.

• Trees will grow well with bedrock because the roots can grow sideways instead of down.

• Trees will not grow well because the roots will break the rock.

A student collected a soil sample and placed it in a clear cylinder. Next the student added 10 mL of water to the container.

After two minutes, the student observed that most of the water remained on top of the soil in the container.

Which of the following most likely describes the soil in the container?

• The soil sample is mostly gravel.

• The soil sample is mostly clay.

• The soil sample is mostly sand.

• The soil sample is mostly silt.

Students conducted an investigation to determine the ability of different soils to retain water. The resunts are shown in the table.

The Texas Sage is a drought tolerant plant grown in many nurseries. Drought tolerant plants are able to survive and thrive in areas without much rainfall or water retained.

Based on the table with data, in which soil would the Texas Sage be least likely to thrive?

• sand

• clay

• peat

• clay loam

After the unit on soils, the students were given several types of plants to plant in different containers: a cactus that needs soil that drains well, a fern that needs soil that stays wet easily, and an aster that can tolerate extreme dry and wet. They were also given clay, loam, and sand to use with the plants.

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While observing soil samples, students noticed that water poured easily through sand, but it did not easily pour through the clay soil. What caused the clay soil to retain more water than the sand?

• The clay soil is darker color than the sand.

• Plants that grow in clay soil do not need a lot of water.

• Clay soil has large particles that keep water from flowing through

• The soil particles in clay are small and packed closely together.

A class observed several soil samples. One sample was light colored and had large grains that felt rough and scratchy. Water drained easily through the soil.

Which of the following plants would grow best in this soil?

• Cactus

• Ferns

• Grass

• Lettuce

All of the following are nonrenewable resources EXCEPT-

• coal

• animals

• petroleum

• natural gas

What nonrenewable resource is a solid substance made from ancient trees that were buried millions of years ago and is now mined from the ground to be used as an energy source?

• natural gas

• coal

• plants

• water

What type of resource are the grapes in the image?

• a nonrenewable resource

• a fossil resource

• an alternative resource

• a renewable resource

Which of the following resources that can be burned for heat comes from a renewable resource?

• wood

• coal

• oil

• natural gas