Solar system
1. interpret planetary data like mass and orbits
2. know differences of orbits of the planets, moons and comets, plus at least four different types of Earth satellites
3. know how gravitational forces control movements and orbits of planets, moons, comets and satellites.
The rest of the Universe
1. Our huge galaxy, the Milky Way, has many millions of stars in it
2. The Universe is made of an enormous number of galaxies. So far no life has been found (by radio) at any other star than our Sun.
3. Stars form by the collapse under gravity of large clouds of hydrogen, helium and dust. The hot core starts nuclear reactions.
4. Small stars like our Sun become red giants and later white dwarfs.
5. The Big Bang theory suggests that all matter and space itself exploded from a tiny point and is still expanding.
6. Evidence for the Big Bang
* galactic red shift of light waves shows that all stars are moving away from us
* background microwave radiation is a universal leftover from the Big Bang
If there is enough mass in the Universe, the pull of gravity will reverse the expansion and we will head for a Big Crunch. It seems there is more dark matter than we thought, but we wont know for at least ten billion years. Our yellow Sun will only last another 5 million years or so, so that is a more immediate ! challenge.
Learning ideas:
1. For each of these draw a suitable data structure or two. (Table, bar chart, line graph, web, storyboard, or just a plain sketch)
2. Label them well at revision time. Which is now: expect two short tests next week.
3. Test your mates on their labelling skills.
4. Give a short talk on each. Ask and answer questions at the end.
5. Find a spare parent and tell them what you know about a topic. Ask them to add to your knowledge, or ask if there is is anything you should explain better.
PS Tell me sometime soon which of these you hav'nt read:
The House at Pooh Corner and Now We Are Six
Alice in Wonderland and Through the Looking Glass
Just So Stories and Puck of Pook's Hill
Down with skool!
1066 and all that
Beau Geste
King Solomon's Mines, She and perhaps Ayesha
Conan Doyle's collected short stories
Note that these are mostly empire-building stuff. But as we are into another phase of empire building, we need to learn the lessons.
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