# YR1_T3_LSN1

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Slide 1: Tekstslide
ScienceMiddelbare schoolhavo, vwoLeerjaar 1

In deze les zitten 11 slides, met tekstslides.

## Onderdelen in deze les

#### Slide 1 -Tekstslide

• Textbook
• Notebook
• Macbook
• Pen & highlight marker

#### Slide 2 -Tekstslide

TOPIC 3
MOVEMENT IN THE WORLD
p. 90-123

#### Slide 3 -Tekstslide

§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.

p. 92-97

#### Slide 4 -Tekstslide

§3.1 GRAVITY
KEY WORDS:
• gravity
• gravitational force
• atmosphere
• orbit
• tides
• black hole

p. 92-97

#### Slide 5 -Tekstslide

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?

p. 92-97
• Gravity is invisible.
• You can only see its effects.

#### Slide 6 -Tekstslide

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:

p. 92-97
• We don’t float away.
• The air we breathe stays in our atmosphere.

#### Slide 7 -Tekstslide

Moon's gravity
Though the moon’s gravitational force is only ⅙ as large as earth's it still affects life on earth

p. 92-97
• The moon’s gravity pulls on the water in the ocean
• This pull changes as the earth rotates and makes the tides

#### Slide 8 -Tekstslide

Gravity in the universe.
Everything that has mass has a gravitational force.

p. 92-97
• The sun’s gravitational force holds all the planets in the solar system in orbit
• Gravity creates, stars, planets and black holes too!

#### Slide 9 -Tekstslide

SUMMARY OF THE DAY:
• WHAT DID YOU LEARN TODAY?
• WRITE THIS DOWN IN 2-3 SENTENCES MAXIMUM.
p. 92-93

#### Slide 10 -Tekstslide

HOMEWORK FOR NEXT LESSON: