Exploring our Solar System
P2f part 1
Objectives
In this lesson we should learn:
• about the bodies in space that make up
the Universe
• why planets and moons s...
Outcomes
Foundation Paper
You should now be able to..

• Know that: Earth is one of a number of planets that orbit
the Sun...
The Universe
Star
Moon

Meteor
Sun

Galaxy
Asteroid
Cluster

Planet
Earth

Universe

Can you put them in
order of size?
Universe
Our universal address would be:

Universe

Weatherhead high School,

Cluster

Wallasey,

Galaxy
Star and Sun
Planet and Ea...
Galaxies
3 Types of Galaxies
1)

Elliptical – oval shaped, no arms, little gas
or dust clouds
2) Spiral – bulging nucleus (the cent...
Elliptical
Spiral
Barred Spiral
Irregular
Black holes
• The gravity on neutron stars, white dwarfs
and black dwarfs is so strong that it
crushes atoms, so the matte...
Black
Holes
Black Holes
• The intense
gravitational field left
when a giant star
collapses
Satellites
Path followed
if gravity
switched off

Pull of gravity

Earth

Path followed
by satellite
Useful orbits
There are TWO main orbits that are
useful called POLAR and EQUATORIAL.
POLAR -The orbit is close
to the Eart...
Polar orbits
Because the Earth spins the satellite
will ‘see’ every part of the Earth once
every 24 hours.
This orbit is u...
Equatorial orbits

At the right distance the satellite will take
24 hours to orbit the Earth. Because the
Earth is also sp...
Outcomes
Foundation Paper
You should now be able to..

Know that: Earth is one of a number of planets that orbit

the Sun...
This powerpoint was kindly donated to
www.worldofteaching.com

http://www.worldofteaching.com is home to over a
thousand p...
Exploring our solar system part 1
Exploring our solar system part 1
Exploring our solar system part 1
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Exploring our solar system part 1

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Exploring our solar system part 1

  1. 1. Exploring our Solar System P2f part 1
  2. 2. Objectives In this lesson we should learn: • about the bodies in space that make up the Universe • why planets and moons stay in orbits • about the planets in our Solar System, producing a model of the Solar System
  3. 3. Outcomes Foundation Paper You should now be able to.. • Know that: Earth is one of a number of planets that orbit the Sun: the Moon orbits Earth; Earth orbits the Sun and the relative positions of Earth, Sun and planets • Know that the Universe consists of: stars and planets, comets and meteors, black holes, large groups of stars called galaxies • Describe why stars can be seen even though they are far away • Describe that gravitational force determines the motion of planets and satellites • Higher paper • Know the relative positions of planets, stars, comets, meteors, galaxies and black holes • Know that circular motion requires a centripetal force and that gravity provides the centripetal force for orbital motion
  4. 4. The Universe Star Moon Meteor Sun Galaxy Asteroid Cluster Planet Earth Universe Can you put them in order of size?
  5. 5. Universe
  6. 6. Our universal address would be: Universe Weatherhead high School, Cluster Wallasey, Galaxy Star and Sun Planet and Earth Moon Asteroid Meteor Breck road, CH44 3HS, England, Europe, Earth, Sol, Milky Way Galaxy, Andromeda Cluster, The Universe.
  7. 7. Galaxies
  8. 8. 3 Types of Galaxies 1) Elliptical – oval shaped, no arms, little gas or dust clouds 2) Spiral – bulging nucleus (the center) with a least two arms that contain great clouds of gas & dust coming out on opposite sides (3/4 of all) 3) Irregular – stars spread unevenly, no distinct shape, least common
  9. 9. Elliptical
  10. 10. Spiral
  11. 11. Barred Spiral
  12. 12. Irregular
  13. 13. Black holes • The gravity on neutron stars, white dwarfs and black dwarfs is so strong that it crushes atoms, so the matter in stars is millions of times denser than anything on earth. • A black hole is formed if enough of this dense matter is left behind after a supernova explosion then the gravitational field is so strong that nothing can escape not even light. • Scientists know they exist using x-rays
  14. 14. Black Holes
  15. 15. Black Holes • The intense gravitational field left when a giant star collapses
  16. 16. Satellites Path followed if gravity switched off Pull of gravity Earth Path followed by satellite
  17. 17. Useful orbits There are TWO main orbits that are useful called POLAR and EQUATORIAL. POLAR -The orbit is close to the Earth, only just above the atmosphere. With a good camera you can see the headlines on a newspaper!
  18. 18. Polar orbits Because the Earth spins the satellite will ‘see’ every part of the Earth once every 24 hours. This orbit is used for spy and weather satellites.
  19. 19. Equatorial orbits At the right distance the satellite will take 24 hours to orbit the Earth. Because the Earth is also spinning once each 24 hours the satellite stays above the same place on the Earth all the time. We call this a GEOSTATIONARY orbit. This orbit is used for communication satellites, like Sky TV.
  20. 20. Outcomes Foundation Paper You should now be able to.. Know that: Earth is one of a number of planets that orbit the Sun: the Moon orbits Earth; Earth orbits the Sun and the relative positions of Earth, Sun and planets Know that the Universe consists of: stars and planets, comets and meteors, black holes, large groups of stars called galaxies Describe why stars can be seen even though they are far away Describe that gravitational force determines the motion of planets and satellites Higher paper Know the relative positions of planets, stars, comets, meteors, galaxies and black holes Know that circular motion requires a centripetal force and that gravity provides the centripetal force for orbital motion
  21. 21. This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.

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