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YR1_T3_LSN1
iubioub
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Computer (Lessonup)
Textbook
Notebook
Pencil case
I am ready for this lesson:
I am in the correct seat.
My jacket is in my locker.
My telephone is at home or in my locker.
I have all my materials ready as required by the checklist.
I do not have any food / drinks and/or chewing gum.
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Slide 1:
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Science
Middelbare school
havo, vwo
Leerjaar 1
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iubioub
Materials
Computer (Lessonup)
Textbook
Notebook
Pencil case
I am ready for this lesson:
I am in the correct seat.
My jacket is in my locker.
My telephone is at home or in my locker.
I have all my materials ready as required by the checklist.
I do not have any food / drinks and/or chewing gum.
Slide 1 - Diapositive
Are we ready?
😒
🙁
😐
🙂
😃
Slide 2 - Sondage
iubioub
During this lesson I will .......
... be quiet during classroom instructions.
... raise my hand when I have a question.
... listen when others are speaking.
... be an active and involved participant.
... only touch/use my own materials.
Slide 3 - Diapositive
iubioub
A WARNING
DIFFERENT SEAT (if possible)
TIME OUT: 5 MIN. MAX CORRIDOR (max 1 at the time)
REMOVAL TO B022
Slide 4 - Diapositive
iubioub
PLAN FOR TODAY:
1.
2.
3.
4.
20min: explanation T3.1
Learning goals
Key words
Notes
5min: short break
Do not move from your seat
Keep your volume down
30min: explanation T3.2
Learning goals
Key words
Notes
35 min: work on homework
Complete all exercises of §3.1 and §3.2
Study glossary list §3.1 and §3.2 on StudyGo
Slide 5 - Diapositive
TOPIC 3
MOVEMENT IN THE WORLD
Slide 6 - Diapositive
§3.1 GRAVITY
LEARNING GOALS:
I can explain what gravity is.
I can explain why gravity is essential for life on Earth.
I can explain the effect of gravity in the universe.
Slide 7 - Diapositive
§3.1 GRAVITY
KEY WORDS:
gravity
gravitational force
atmosphere
orbit
tides
black hole
Slide 8 - Diapositive
What is gravity?
Gravity
- a force between two objects due to their mass and size.
The objects are pulled towards each other.
What are some examples you
can think of?
Gravity is invisible.
You can only see its effects.
Slide 9 - Diapositive
Earth's gravity
Earth is very large, it has a large
gravitational force,
It interacts with other objects and pulls them towards earth.
This is essential for life on earth:
We don’t float away.
The air we breathe stays in our atmosphere.
Slide 10 - Diapositive
Moon's gravity
Though the moon’s gravitational force is only ⅙ as large as earth's it still affects life on earth
The moon’s gravity pulls on the water in the ocean
This pull changes as the earth rotates and makes the tides
Slide 11 - Diapositive
Slide 12 - Vidéo
Gravity in the universe
Everything that has mass has a gravitational force.
The sun’s gravitational force holds all the planets in the solar system in orbit
Gravity creates, stars, planets and black holes too!
Slide 13 - Diapositive
What is gravity?
A
Gravity is a force between two objects due to their mass and size.
B
Gravity is a force between two objects due to their mass and speed.
C
Gravity is a force between two objects due to their speed and size.
D
Gravity is a force within two objects due to their mass and size.
Slide 14 - Quiz
True or False:
Tides are cause by the Sun's gravity.
A
True
B
False
Slide 15 - Quiz
True or False:
A black hole is black because it even sucks in all light.
A
True
B
False
Slide 16 - Quiz
Short break
Do not move from your seat
Keep your volume down
timer
5:00
Slide 17 - Diapositive
§3.2 FORCES
I can explain that you cannot see a force, but only the effect
I know different forces acting on a moving person (gravity, muscle force, air resistance and friction)
I can draw forces with arrows
I can calculate with forces in Newtons.
Slide 18 - Diapositive
§3.2 FORCES
KEY WORDS:
Force
Gravity
Muscle force
Air resistance
Friction
Newtons
Newton meter
Slide 19 - Diapositive
Types of forces
A force
is a push or pull. Forces cannot be seen, but their effects can.
Common types of forces:
Gravity
Muscle force
Air resistance
Friction
Slide 20 - Diapositive
Slide 21 - Vidéo
What two forces are slowing these cyclists down?
Slide 22 - Question ouverte
Why does a sled slide easier on ice than on the road?
Slide 23 - Question ouverte
Why does skating behind someone cost less energy?
Slide 24 - Question ouverte
Measuring forces
Newton (N)
is the unit of a force.
The more newtons, the stronger the force.
A
Newton meter
can help you measure
the force.
Slide 25 - Diapositive
Showing forces
We use arrows to show two things about the force:
The
direction
= the direction the arrow points at
The
size
= the length of the arrow
What kind of force is the blue arrow?
What kind of force is the red arrow?
What will happen to the box?
Slide 26 - Diapositive
Add and substract forces
Two forces in the same direction are
ADDED
Two forces in the opposite direction are
SUBSTRACTED
Slide 27 - Diapositive
Does the cyclist move forwards or backwards? Explain please.
Slide 28 - Question ouverte
Resultant force
Resultant force
: the sum of all the forces
Same direction = add Opposite direction = subtract
Slide 29 - Diapositive
Resultant force
180 - 175 = 5N to the left
100 + 80 = 180N 85 + 90 = 175N
Slide 30 - Diapositive
Homework:
Complete all exercises of §3.1 and §3.2
Study glossary list §3.1 and §3.2 on StudyGo
Slide 31 - Diapositive
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