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