Cycles of Matter

What makes up 78% of the air we breathe?

• oxygen
• free nitrogen
• fixed nitrogen
• carbon

What plants would be capable of creating a usable form of nitrogen or humans?

• clover
• peanuts
• alfalfa
• all of the above

Rain, sleet, snow, and hail are all forms of _____.

• Percolation
• Evaporation
• Condensation
• Precipitation

Tags

NGSS.MS-ESS2-4

Which of the following best explains why nitrogen fixation must take place?

• Atmospheric nitrogen is unusable to plants and animals
• Nitrogen must be returned to the atmosphere
• Animals must breathe in nitrogen
• Nitrogen gets "stuck" in the soil and must be untrapped

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the overall purpose of photosynthesis?

• To use energy from the sun to produce food for the plant
• To use energy from the sun to produce oxygen for animals to breathe
• To break down food in order to produce energy (ATP)
• To break down food in order to produce carbon dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The continuous process by which water moves from Earth's surface to the atmosphere and back

• Nitrogen Cycle
• Carbon Oxygen Cycle
• WaterCycle
• Nitrogen Fixation

Tags

NGSS.MS-ESS2-4

How animals get the nitrogen they need

• from the air they breathe
• from the water they drink
• from the food they eat
• from the Sun

Tags

NGSS.MS-LS2-3

Organism that breaks down dead plants & animals and releases nitrogen back into atmosphere

• bacteria
• plants
• animals
• producers

Tags

NGSS.MS-LS2-3

When nitrogen gas is turned in to a form that plants and animals can use is called 

• Combustion
• Photosynthesis
• Decomposition
• Nitrogen Fixation

How does phosphorus travel through an ecosystem?

• From the soil to producers and then from producers to consumers.

• From the air directly into consumers and then from consumers to producers.

• Phosphorus cannot travel through an ecosystem.

• From the soil to producers and that is as far as phosphorus may travel.

Tags

NGSS.MS-LS2-3