Food Energy Module 3: 7 th grade. March 24: What is ‘Accountable Talk’? What is Accountable...

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Food Energy Module 3: 7 th grade

Transcript of Food Energy Module 3: 7 th grade. March 24: What is ‘Accountable Talk’? What is Accountable...

Food Energy

Module 3: 7th grade

March 24:What is ‘Accountable Talk’?

What is Accountable Talk?Why do you think it is called

“Accountable”?What does it look like/ sound

like?

Accountable Talk Game Rules

Each group member gets a colored marble or bead. The group gets one bucket.

Have a conversation on the given topic. It is a discussion, using Accountable Talk.

Place your marble/bead into the bucket each time you make a contribution to the discussion, including responses to others as well as new points.

Discuss our game

How many marbles/ beads of each color do you see in your bucket?

What does that tell us?Did you use Accountable Talk?What are 2 things you can do

better to employ Accountable talk?

Discuss food energy and plant food energy

March 25: Plants are Producers…

Plants don’t eat food. How do plants get the building materials they need to grow, change, repair damage, and replace parts, and the energy they need to do the things they do?

What do plants make their food out of?

Food Producers Experiment

Read over Purpose & Procedure together Write our your own personal hypothesis Then, flip over paper to look at data Calculate Plant Data Mass change: what does

this number represent? Analyze the data to determine results Write our your personal conclusions: was your

hypothesis correct? What did you learn?

Class Discussion of Food Producer Lab

Remember Accountable Talk! Review purpose and procedure: was this truly

an ‘experiment’? How do you know? Look at Data. Why use a table for data? What

does Plant Mass change numbers represent? What were your hypotheses? Were they

correct? So, how does soil fit in? What do you think was the purpose of this

lesson? Did we achieve it?

President Obama’s news conference 3/24

“Do you think scientific consensus is enough to tell us what we should or shouldn’t do?”

What is ‘scientific consensus’ and how is it formed?

What do you think the President said in response?

What would you say?

March 26: Review Plant Energy

What did we learn in yesterday’s lesson about what plants need to produce their own food?

By what process do they make their own food from these environmental factors?

Photosynthesis

Photo= light + Synthesis= to put together Photosynthesis means that in the presence

of light, plants put carbon dioxide and water together to make food (called carbohydrate)

Copy Equation for Reaction:

6CO2 + 6H2O + light C6H12O6+6O2

Linking Food Energy to Trophic Levels and Food Webs

Read Pages 17-21 in books Answer worksheet in groups Pay special attention to diagram on top of

page 19

Quiz tomorrow on food webs and trophic levels (we will study together in class tomorrow to prepare before quiz)

March 27: Quickwrite

What are the trophic levels in a food web?

The biomass of which trophic level is the most in the entire food web?

THE TROPHIC PYRAMID, either biomass or energy based, can tell you a lot about that ecosystem. A trophic pyramid of a stable, healthy ecosystem will look something like this:

Practice Constructing Food Webs

Your Quiz is exactly like this practice, so pay attention

Each group needs to create one web to share with the class

You have only 10 minutes to work in groups

Quickwrite: March 30

How do you get the energy you need to move and do all the other things you need to do?

How is food turned into energy in your body? What are calories in food? What kinds of food give you the most

energy? Does sleep give you energy?

Calories

Can calories be taken out of food, like taking raisins out of raisin bran?

No, the calorie is a unit used to measure energy in food. It cannot be removed.

Carbohydrates

Chemicals that have energy in bonds that hold the atoms together (biochemistry)

When the body breaks down sugars into simpler chemicals, energy is released

Includes starches and sugars

MAKE A DRAWING – no words

How do YOU get energy?

What do you do to get energy when you are tired?

Food Energy: wikipedia

Food energy is the amount of energy in food that is available through digestion.

Like other forms of energy, food energy is expressed in calories or joules.

Only carbohydrates (including fiber), fats, proteins, organic acids, polyols, and ethanol contain food energy. All foods are made up of a combination of these five nutrients.

Everything else in food is non-caloric, including (but not limited to) water, vitamins, minerals, antioxidants, caffeine, spices and natural flavors.

Using Food Energy

The conversion efficiency of food energy into physical power depends on the form of energy source (type of food) and on the type of physical energy usage (e.g. which muscles are used, whether the muscle is used aerobically or anaerobically). In general, the efficiency of muscles is rather low, and roughly speaking, only about 15% of the food energy is actually converted into mechanical energy.

March 31: Quickwrite

How do Vampires get their energy?

How do Vampires lose their energy?

Bram Stoker's Dracula

"His eyebrows were very massive, almost meeting over the nose, and with bushy hair that seemed to curl in its own profusion. The mouth ... was fixed and rather cruel-looking, with peculiarly sharp white teeth; these protruded over the lips, whose remarkable ruddiness showed astonishing vitality in a man of his years ... The general effect was one of extraordinary pallor."

Porphyria cutanea tarda (PCT)

The bloodthirsty Count's physical features could have been caused, say some researchers, by a rare disorder called porphyria cutanea tarda (PCT). The disease is the most common form of a group of inherited disorders that result in abnormal production of pigments that are essential components of proteins such as hemoglobin, the oxygen-carrying part of red blood cells.

PCT

According to the American Porphyria Foundation, PCT primarily causes skins problems such as blisters that appear on sun-exposed areas of the body such as the hands and face. Even after minor trauma like a cut, the skin in these areas can peel or blister. In addition, people with PCT may also have darkening and thickening of the skin, as well as increased hair growth. In another, extremely rare form of the disorder called congenital erythropoietic porphyria, the teeth can be stained a reddish brown due to the buildup of pigments.

PCT Continued…

The symptoms of PCT and other forms of the disease can be alleviated by avoiding sunlight (direct exposure to which can destroy a vampire). And because certain forms of the disease involve a deficiency in red blood cells, it is sometimes treated with repeated blood transfusions.

March 31, 1989- March 31, 2009

Is it true that “dirt don’t hurt”?

1) What kind of soil do you think this is?

2) How many calories are in one serving size of each ingredient of the dirt cake? Is that a lot or a little? Compare with peanut butter etc.

3) What does that mean? What’s a calorie?

4) What categories of nutritional facts are usually listed on a package?

How many calories did you eat?

Oreo: 160 calories Vanilla pudding: 150 calories Gummy worms: 60 calories

___370_ calories total, compared to:

Raisins: 130 calories

Peanut butter: 190 calories

Breakfast bars: 120 calories

April 2: Quickwrite

How does energy move within an ecosystem?

Energy is the ability to do work.

What are some kinds of work you do that require energy?

Does intellectual work require energy?

Let’s Trace Energy through the Trophic Levels