7.2 Energy

7.2 Planning
Learning objectives
Instruction
- energy
- BMI
- Fats and sugars
Work/homework




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Slide 1: Slide
BiologieMiddelbare schoolhavo, vwoLeerjaar 2

This lesson contains 19 slides, with interactive quizzes, text slides and 1 video.

Items in this lesson

7.2 Planning
Learning objectives
Instruction
- energy
- BMI
- Fats and sugars
Work/homework




Slide 1 - Slide

Slide 2 - Video

7.2 Energy
You will learn what and how much you have to eat in order to get enough energy.


Slide 3 - Slide

Which body part uses the most energy at night?
A
Heart
B
Brain
C
Liver
D
Muscles

Slide 4 - Quiz

Which body part(s) use(s) energy when
you are studying for a test.
A
The muscles
B
The brain
C
The muscles as well as the brain

Slide 5 - Quiz

When you ride your bike you use ... energy than when you ride the bus.
A
More
B
Less

Slide 6 - Quiz

You get energy from..
A
Minerals and water
B
Minerals and carbohydrates
C
Carbohydrates and fats
D
Water en fats

Slide 7 - Quiz

Energy
Energy: Necessary for processes of life, activity and to stay warm. 
Released during respiration (verbranding) of energy-rich nutrients such as glucose. 

Carbohydrates and fats

Slide 8 - Slide

Exercising
Carbohydrates are more easily digested than fats. 

Eating a lot of fat just before exercising is not very sensible

Slide 9 - Slide

The unit kilojoule
The amount of energy is expressed in the unit kilojoule (kJ):
1 kilojoule is 1,000 joules. 

The energy is often stated in kilocalorie (kcal) as well: 
1 kcal equals 4.2 kJ
1 kJ equals 1:4.2 kcal

Slide 10 - Slide

The amount of energy you need depends on three things. 

  • Activity: the more active you are, the more kilojoules your body consumes.
  • Age: adults need more energy than small children.
  • Gender: males consume more energy than females


Slide 11 - Slide

Slide 12 - Slide

Who uses more energy-rich nutrients?
A
A two year old child.
B
An eight year old child.

Slide 13 - Quiz

Body Mass Index
BMI (Body Mass Index) = a method to determine if your weight is healthy.

Overweight
Underweight

Slide 14 - Slide

What is cholesterol?

Slide 15 - Slide

Why a moderate-fat diet?
 Cholesterol = a fatty substance that your body uses to produce new cells.

Too many fatty foods -- cholesterol accumulate blood vessels -- blood vessels become narrower -- high blood pressure resulting in a heart that wears out faster.

Cholesterol in coronary arteries --> shortage of nutrients and oxygen->heart attack

Slide 16 - Slide

Why a moderate-sugar diet?
Cariës = A cavity develops when bacteria in your mouth convert sugar into acid. This acid attacks the dental enamel, which dissolves the softer dentine below. The result is a cavity.

Slide 17 - Slide

What?
Make: All of 7.1 and 1 til 5 of 7.2
How?
In your (online) book. Choose: talking softly or listening to music on your laptop with only one earbud! 
Help?
Ask your classmates beside you first, then raise your hand for my assistance
Time?
10-15 minutes
Finished?
Make a summary of 7.1. --> HOW?
Proceeds
You have finished your homework! Well done!

Slide 18 - Slide

Let's discuss the lesson!

Don't pack your bags yet!
What did you learn today?

When de bell rings:
- Pull up your chairs
- Don't forget your phone

Slide 19 - Slide