YR1_T3_LSN2

• Science
• Middelbare school
• havo, vwo
• Leerjaar 1

GET READY

• Macbook
• Join this lessonup

PLAN FOR TODAY

• Entry ticket §3.1
• Check hw of §3.1 (Stickers!)
• Theory and notes of §3.2
• Forces worksheet &Tug of war simulation
• Start exercises of §3.2

PREVIOUS LESSON?

What is gravity?

1. Gravity is a force between two objects due to their mass and size.
2. Gravity is a force between two objects due to their mass and speed.
3. Gravity is a force between two objects due to their speed and size.
4. Gravity is a force within two objects due to their mass and size.

True or False:
Plants react to gravity for their growth.

1. True
2. False

True or False:
Tides are cause by the Sun's gravity.

1. True
2. False

True or False:
A black hole is black because it even sucks in all light.

1. True
2. False

GET READY

• Textbook (homework exercises §3.1)
• Macbook (answer sheet on classroom)
• Coloured pen or pencil.

HW CHECK

• Check the answers on classroom
• Check your own work.
• Use a coloured pen/pencil.
• Correct your own work.
• Ask questions.

p. 94-97

GET READY

• Notebook (fresh page).
• Macbook (this lessonup).
• Pen & highlight marker.

§3.2 FORCES

TEXTBOOK PAGES 98-103

§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.

p. 98-99

§3.2 FORCES

KEY WORDS:

• Force
• Gravity
• Muscle force
• Air resistance
• Friction
• Newtons
• Newton meter 

p. 98-99

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

p. 92-97

What two forces are slowing these cyclists down?

Why does a sled slide easier on ice than on the road?

Why does skating behind someone cost less energy?

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.

p. 92-97

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?

p. 92-97

WORKSHEET OF WAR

• OPEN GOOGLE CLASSROOM
• OPEN THE WORKSHEET
• OPEN THE LINK
• COMPLETE THE WORKSHEET

WORKSHEET DRAWING FORCES

• Macbook closed.
• Books closed
• a ruler triangle
• coloured pencils
• a pencil

SUMMARY OF THE DAY:

• WHAT DID YOU LEARN TODAY?
• WRITE THIS DOWN IN 2-3 SENTENCES MAXIMUM.

p. 98-99

HOMEWORK FOR NEXT LESSON:

• Study WRTS list §3.1 & §3.2
• Complete the exercises on pages 100-103
• Read & Highlight §3.3
• Bring a ruler/triangle
• Bring coloured pencils

p. 100-103