What two kinds of material make up soil?

• dirt and worms

• dirt and minerals

• organic material and minerals

• topsoil and rocks

The three most important mineral nutrients for plants are ____________, ____________, and _____________.

• hydrogen, oxygen, and water

• nitrogen, phosphorus, and potassium

• phosphorus, potash, and salt

• phosphorus, fertilizer, and bacteria

Tags

NGSS.MS-LS2-1

The nutrient that stimulates growth of leaves and gives plants a rich green color

• nitrogen

• potassium

• phosphorus

• potash

This element is essential for cell division and promotes plant maturation

• potassium

• nitrogen

• oxygen

• phosphorus

The primary function of this element is to contribute to the general health of the plant and encourage root growth and fruit formation

• nitrogen

• potash

• potassium

• oxygen

What is the process where nitrogen is moved from the air to the soil to be used by plants and then returned to the atmosphere to be used again?

• ammonia cycle

• nitrogen cycle

• bacterial cycle

• water cycle

Tags

NGSS.MS-LS2-3

This nitrogen fixing bacteria lives in the roots of beans, clovers and peas

• ribosomes

• rhizobia

• radicals

• roots

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

This bacteria in the soil returns nitrogen to the atmosphere by converting nitrogen from nitrates into atmospheric nitrogen

• hydrogen bacteria

• oxygenizing bacteria

• nitrifying bacteria

• denitrifying bacteria

In the atmosphere, energy from lightning causes nitrogen and oxygen to form _____________.

• nitrates

• fire flies

• shooting stars

• heat lightning

Tags

NGSS.MS-PS1-5

_________ carries airborne nitrates to the soil during a storm.

• clouds

• rain

• lightning

• tornadoes

Tags

NGSS.MS-ESS2-5