Unit 7 Human Impact Test Review

1. Identify the material that makes up layer A.

• litter
• topsoil
• subsoil
• bedrock

2. Identify the layer that contains the most nutrient rich material.

• O
• A
• B
• C

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

3. What layer is located AT and BELOW layer C?

• subsoil
• topsoil
• litter
• bedrock

4. ___________________ is made from the remains of decaying plant and animal remains.

• organic material
• inorganic material
• litter
• bedrock

5. Soil is a mixture of....... (choose all that apply)

• organic material
• Weathered rock particles, sediment
• air
• water

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

6. The first step in the process of forming soil is

• the weathering of rock into sediment
• bacteria decomposing organic material
• formation of humus

7. Which soil conservation method helps prevent soil erosion?

• laying ground cover such as mulch or straw
• planting wind breaks (trees) around a flat, open field
• conservation plowing- leaving harvested crop on the ground
• all of these

8. Using the heat from the Earth's interior to generate electricity is which form of renewable energy?

• biomass
• geothermal
• nuclear
• hydroelectricity

Tags

NGSS.MS-PS3-3

9. _______ power is generated from the heat released when uranium atoms split in a process known as fission.

• biomass
• solar
• nuclear
• geothermal

Tags

NGSS.HS-PS1-8

10. Which source/s are considered NONrenewable? Choose all that apply

• Fossil Fuels
• Nuclear
• coal
• petroleum/oil
• Hydroelectricity