Lesson 3


3.2 Day and night
3.3 The seasons
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Slide 1: Tekstslide
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In deze les zitten 14 slides, met tekstslides en 1 video.

time-iconLesduur is: 45 min

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3.2 Day and night
3.3 The seasons

Slide 1 - Tekstslide

This lesson
  • The night sky

  • Discussing the Astronomy poster assignment

  • Day and night and the seasons

Slide 2 - Tekstslide

  • To discuss the homework exercises
  • To make a start on paragraph 2.2 and 2.3

Slide 3 - Tekstslide

The night sky
a) Make a list of objects mentioned in 3.1 that astronomers have found in the universe.

b) Explain what the words orbit, natural satellite, artificial satellite, meteors, meteorite and comet mean.

c) Give an example of a natural satellite.
d) Give an example of an artificial satellite.

Slide 4 - Tekstslide

The night sky
  • Stars
  • Planets
  • Dwarf planets
  • Exo planets
  • Moons
  • Comets
  • Meteors
  • Comets

Slide 5 - Tekstslide

Astronomy poster

Slide 6 - Tekstslide

Astronomy poster
Use an empty page of your notebook for this assignment.
Make a poster that explains what the following terms mean:

Planet, moon, solar system, star, galaxy, orbit.

  • Write down what each term means.
  • Order these objects from smallest to largest.
  • Explain through text and drawings how these terms go together.

Slide 7 - Tekstslide

Open up the page on which you made your poster.
Compare your poster to your neighbour's and answer the following questions:

  •  What are the similarities between your two posters?
  • What are the difference between your two posters?

Slide 8 - Tekstslide

An object in space rotating around another object in space.
A natural object rotating around a planet.
A large natural object rotating around a star
A massive, luminous body of gas in the center of a solar system
Solar system
A system of planets and other objects orbiting a star held together by gravity.
A massive collection of solar systems held together by gravity orbiting a black hole. 

Slide 9 - Tekstslide

Solar system

Slide 10 - Tekstslide

Solar system
Super clusters

Slide 11 - Tekstslide

1) How long does it take Earth to spin once around it's axis?

2) How long does it take Earth to make one rotation around the sun?

3) When it's night, that area of the earth is faced towards / away from the sun

4) When it's day, that area of the earth is faced towards / away from the sun

5) How many degrees is the tilt of the Earth's axis?

6) What is the northern hemisphere of the earth? What is the southern hemisphere of the earth?

7) The seasons in the Northern and southern hemisphere's are reversed. True or false?

Slide 12 - Tekstslide

Read paragraph 3.2 and 3.3
Do the ybellowblock exercises of paragraph 3.2 and 3.3

Slide 13 - Tekstslide

Slide 14 - Video