Thursday Nitro

Nitrogen Cycle

Monday, October 24, 2022

Fill in the blank -
Standard SEV1b - Recall
As energy is transferred through
each trophic level, only 10% is
kept and 90% is lost in the form of
heat_.

Document your answer in
whiteboard.fi through Clever

Standard

SEV1. Obtain, evaluate, and communicate
information to investigate the flow of energy
and cycling of matter within an ecosystem.

C. Analyze and interpret data to construct
an argument of the necessity of
biogeochemical cycles (hydrologic,
nitrogen, phosphorus, oxygen, and carbon)
to support a sustainable ecosystem.

Learning Targets

I can explain the pathways
nitrogen takes through the
environment.

I can understand and label a
diagram of the nitrogen cycle.

Hawk eye’s

question

Write in this box!!!

We will discuss the nitrogen cycle

Where is most of the nitrogen in the ecosystem?

Beginning-of-

class

When starting an

aquarium, you can’t add
fish right away...they’ll

die.

Why?

Keep this question in

mind and we will revist it

at the end of class.

Do you have an

aquarium?

Take me to see

How many of you have ever
set-up or owned a fish tank?

Nitrogen Cycle

Nitrogen Fixation

Nitrification

These are the terms you will learn today.
How many are you already familiar with? 1, 2, or 3?

Hold up your fingers in front of the camera to show me.

Nitrogen

Living things need Nitrogen.
The majority of Earth’s
atmosphere (78%) is Nitrogen.

Like the water cycle, Nitrogen
also cycles through the
biosphere (click for a
refresher of the biosphere).

Nitrogen

Chlorophyll

Nitrogen is vital for life on Earth.

It's required for:

DNA

Nitrogen

And it is required for:

amino acids.

Check for Understanding

Nitrogen is essential for all of the following except:

🐢 cloud formation

🐇 building muscle

😀 chlorophyll in photosynthesis

🔊 DNA formation

Check for Understanding

Nitrogen is essential for all of the following except:

🐢 cloud formation

🐇 building muscle

😀 chlorophyll in photosynthesis

🔊 DNA formation

Nitrogen Fixation

Producers like plants can’t use the
form of Nitrogen found in the
atmosphere.

Nitrogen must combine with other
elements first.

This is done by bacteria (microbes) in
the soil. It’s called “fixing” nitrogen.

The new compound is ammonia.

Nitrification

Ammonia still can’t be used.

More bacteria in the soil attach to
the ammonia to form new
compounds.

This is called Nitrification.

The Nitrogen can now be
absorbed by plants through their
roots.

Animals (and humans) eat the
plants and absorb the Nitrogen.

Animal/human waste and matter
is decomposed and the process
starts again.

Let’s listen to what Tim and Moby have to say

Notice role of
bacteria during
each phase as
you watch

https://www.youtube.com/watch?v=oQohpVN20FI

Go to groups in Canvas titled nitrogen cycle

Group discussion Task

●Which group are you in Canvas?

Groups have announcements

●Step 2 look at the announcement it has 3-4 questions about your step in
the nitrogen cycle.

●In the main chat share an answer to one of the questions

Announcement view in groups

Here are some materials to review or Web search

●I will look through the material

●I will look on the web

Tip you have five minutes to do research. Pick and Look for one

question

Mini-Lesson

Let’s listen to what the Amoeba Sisters have to say about the Nitrogen Cycle:

4:00 minute marker

Check For Understanding: Draw arrows to connect the matching pairs

Check For Understanding: Color code the matching pairs

Nitrogen fixation is carried out by nitrogen-fixing bacteria that
live in the soil and roots of legumes, such as peas, making these
bacteria an essential part of the _____ cycle.

🐢 carbon

🐇 nitrogen

😀 water

🔊 phosphorus

Nitrogen fixation is carried out by nitrogen-fixing bacteria that
live in the soil and roots of legumes, such as peas, making these
bacteria an essential part of the _____ cycle.

🐢 carbon

🐇 nitrogen

😀 water

🔊 phosphorus

When starting an

aquarium, you can’t add
fish right away...they’ll

die.

Why?

Back to our fish

tank question

Lesson Summary
●Nitrogen is vital for life on Earth.

●Nitrogen cycles through the
biosphere

●Producers like plants can’t use the
form of Nitrogen found in the
atmosphere. It combines with other
elements first. This is called “fixing”
nitrogen.

●More bacteria in the soil attach to
form new compounds. This is called
Nitrification.

●The Nitrogen can now be absorbed
by plants through their roots.

●Animals (and humans) eat the
plants and absorb the Nitrogen.

Image that helps summarize
today’s lesson

Hawk eye’s

question

Write in this box!!!

We will discuss the nitrogen cycle

Where is most of the nitrogen in the ecosystem?

end-of-class

How is your progress?

🔉 I have written my hypothesis.

👍 I have gathered my materials.

😃 I have started my experiment or written
my survey.

🐇 I have finished my experiment or collected
my survey results.

🐢 I am writing up the analysis of my data.
Break Out Room

Questions?

aallen@georgiacyber.org

ext 2222

See you next time!