Soil

Soil is important because...

• is a medium for plant growth.

• serves as a filter for water.

• is a habitat for living organisms.

• serves as a filter for pollutants.

Tags

NGSS.MS-LS1-5

The major nutrients that plants need are..

• Nitrogen, Potassium, Calcium

• Nitrogen, Carbon dioxide, Oxygen

• Nitrogen, Potassium, Phosphorus

• Phosphorus, Titanium, Nitrogen

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

In the presence of plenty of oxygen..

• aerobic decay occurs and nitrogen is converted into nitrate ions

• anaerobic decay occurs and nitrogen is converted into nitrate ions.

• aerobic decay occurs and nitrogen is converted into ammonium ions then to nitrate ions.

• aerobic decay occurs and nitrogen is converted into ammonium ions.

Tags

NGSS.MS-LS2-3

If insufficient oxygen is present..

• anaerobic decay occurs forming nitrate ions.

• aerobic decay occurs forming ammonium ions.

• anaerobic decay occurs forming ammonium ions.

• aerobic decay occurs forming nitrate ions.

A hardpan is..

• soil that is rich in nutrients and clay

• hardened impervious soil layer

• a pan made out of hard chemicals.

• the fancy name of cracked soils

Why does the available form of nitrogen readily leach from the soil?

• Plants do not need as much.

• Animals consume nitrogen more than they need.

• The form of nitrogen present is not always soluble.

• The form of nitrogen present is not held on by the soil.

Tags

NGSS.MS-LS2-1

What can effect the nutrient uptake in plants?

• Sufficient quantities of nutrients available in the soil.

• Adequate soil moisture.

• A well developed root system.

• Soil temperature not too hot or not too cold.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

How is lime used to regulate pH?

• Makes the soil more acidic

• It increases the pH

• It decreases the pH

• Makes the soil more alkaline

What causes eutrophication?

• no sunlight

• low oxygen

• Algae

• excess nutrients in water

Why is excess growth of algae is a problem?

• It blocks the sunlight.

• It smells

• It can be used as a food resource for other organisms

• It uses the nutrients needed for plants underwater

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4