1. There are places on Earth where the Sun never goes down.
Do you agree or disagree?
Explain your decision.

2. The Pluto problem

3. Question: how big is Pluto?
Not very big!
Its actually smaller than Russia!

4. Pluto is smaller than the moon, but that doesn’t mean that Pluto is a moon!
What does it mean to be a planet?
Planets orbit the Sun, are spherical, and have ‘cleaned up’ all rocks around it (such as asteroids)
Dwarf Planets like Pluto also orbit the Sun, but they’re not big enough to hoover up all the other debris close by it.
Moons can be any size and shape, and circle around a planet or a dwarf planet. Most of Jupiter’s moons are in fact larger than Pluto!

5. Our Solar System
Which of these produces their own light? If something produces its own light, we say that it is luminous. For example; the Sun is luminous. How do we see the other objects in the Solar System? They reflect the light from the Sun.

6. Our Solar System
Our solar system has ______ planets and thousands of ___________, which are small lumps of rock found between _________ and Jupiter.
All the planets and asteroids _______ around the Sun. The Sun is a ______ so it produces its own _______. We can only see planets when they _________ light from the Sun.
Earth
nine
Mars
reflect
orbit
star
light
asteroids

7. The Earth Success Criteria Today you will:
Know about the movements of the Earth, Moon and Sun
Understand why a day is 24 hours and a year is 365¼ days
Be able to explain why seasonal changes happen

8. Modelling the movement of the Earth, Moon and Sun

9. What happens in 24 hours?

10. What happens in a year?

11. Earth, Moon and Sun
Write a paragraph to explain why we have day and night, and why this cycle is 24 hours.
Explain what happens in a year, and why this takes 356¼ days.
Challenge: What is a leap year?
Key words:
Luminous
Axis
Rotate
Orbit

12. The Earth Success Criteria Today you will:
Know about the movements of the Earth, Moon and Sun
Understand why a day is 24 hours and a year is 365¼ days
Be able to explain why seasonal changes happen

13. Why do seasonal changes happen?

14. Why do seasonal changes happen?

15. Why do seasonal changes happen?
Use these words to fill in the gaps. Summer days are and . Winter days are and . It takes the Earth 365 or one to orbit the Sun once. In Britain we have four . They are called , , and . We get seasons because the Earth’s is tilted.

16. The Earth Success Criteria Today you will:
Know about the movements of the Earth, Moon and Sun
Understand why a day is 24 hours and a year is 365¼ days
Be able to explain why seasonal changes happen

17. There are places on Earth where the Sun never goes down.
Do you agree or disagree?
Explain your decision.

19. Question: what are the Northern (and Southern) lights?
The Sun creates so much energy, it often pushes particles towards Earth. When they hit Earth atmosphere, Earth’s magnetic field sends them to the North and South poles, where they undergo a chemical reaction with particles in the atmosphere and create different coloured light.

20. Northern lights on other planets

21. One of Four

22. What is the closest planet to the Sun?
Jupiter
The Earth
Mercury
Saturn

23. What is the closest planet to the Sun?
Jupiter
The Earth
Mercury
Saturn

24. Which is the largest planet?
Jupiter
The Earth
Mercury
Saturn

25. Which is the largest planet?
Jupiter
The Earth
Mercury
Saturn

26. How long does it take the Earth to orbit the Sun?
1 month
1 day
3 months
I year

27. How long does it take the Earth to orbit the Sun?
1 month
1 day
3 months
1 year

28. How long does it take for the Earth to rotate once on it’s axis?
1 Hour
12 Hours
24 Hours
1 Year

29. How long does it take for the Earth to rotate once on it’s axis?
1 Hour
12 Hours
24 Hours
1 Year

30. Which planet has the greatest gravitational pull?
Jupiter
Mars
Earth
Pluto

31. Which planet has the greatest gravitational pull?
Jupiter
Mars
Earth
Pluto

32. Which of the following planets is our next door neighbour?
The Moon
Mercury
Venus
Neptune

33. Which of the following planets is our next door neighbour?
The Moon
Mercury
Venus
Neptune

34. Put the following in order of size (smallest first): Galaxy Planet
Star
Universe
a b c d
b c a d
d c b a
c d b a

35. Put the following in order of size (smallest first): Galaxy Planet
Star
Universe
a b c d
b c a d
d c b a
c d b a

36. Identify the planet:
Earth
Mars
Pluto
Saturn

37. Identify the planet:
Earth
Mars
Pluto
Saturn

38. Identify the planet:
Pluto
Mercury
Uranus
Neptune

39. Identify the planet:
Pluto
Mercury
Uranus
Neptune