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The Solar System Post workshop materials You will need... Your copies of your worksheets Jodrell Bank Discovery Centre.

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Presentation on theme: "The Solar System Post workshop materials You will need... Your copies of your worksheets Jodrell Bank Discovery Centre."— Presentation transcript:

1

2 The Solar System Post workshop materials

3 You will need... Your copies of your worksheets Jodrell Bank Discovery Centre

4 What we are going to do... In The Solar System workshop you performed five experiments all about the different planets We are going to bring together all our different results to see what we learnt Jodrell Bank Discovery Centre

5 This is what scientists do! Scientists all over the world share their results, just like were going to do Can you think why it is better to collect lots of different results together, rather than just looking at one persons results? Jodrell Bank Discovery Centre

6 Jump to an experiment: Click a link below to jump to that experiment Gravity Pots Cratering Density Seasons How do we see? You can also move through the PowerPoint normally, to view all experiments in order When you see this picture Click it to return to this slide Jodrell Bank Discovery Centre

7 Experiment: Gravity Pots! Where is gravity the strongest? Did you know...? A black hole has more gravity than anything else in the universe! Jupiter Earth Mars Moon

8 What is gravity? All planets have gravity Gravity gives things weight, which is the force that keeps us on the ground Do you think that weight is a pulling force, or a pushing force?

9 What is gravity? Weight is a pulling force Weight pulls everything towards the centre of the Earth!

10 The strength of gravity is different on different planets If gravity is twice as strong, things will weigh twice as much What is gravity? Did you know...? If you stood on the Moon, you would weigh 1/6 th what you do on the Earth, because the Moons gravity is 1/6 th of Earths!

11 You weighed 4 containers and matched them up to where they came from Your experiment Jupiter Earth Mars Moon

12 Your results Now download the excel file Gravity Pots from our website and use it to collect the class results together Question: Why did you make your choices? Jodrell Bank Discovery Centre

13 Can you spot a pattern? Were you right? Earth Mars Moon Pot 1 Jupiter Pot 2 Pot 3 Pot 4

14 Gravity: The pattern The more stuff a planet is made from, the greater the strength of gravity Get ready to test your understanding!

15 Test your understanding! Which planet would have the largest gravity? Saturn = 95 Earths Uranus = 15 Earths Neptune = 17 Earths Click on a planet to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue

16 Test your understanding! Harder question: Which planet would have the lowest gravity? Saturn = 95 Earths Uranus = 15 Earths Neptune = 17 Earths Click on a planet to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue

17 Experiment: Cratering! What makes the biggest craters?

18 What are craters? If you look up at the Moon with a telescope, you will see that it is covered in craters Did you know...? The Earth also has some craters, like this one in Arizona, USA

19 What are craters? Craters are made when an object from space (like a rock) smashes into the surface and leaves behind a hole

20 What are craters? Rocks that fall from space are called meteorites On the Earth, we are protected from meteorites by the atmosphere Meteorites get very hot as they fall through the atmosphere and they burn up. This is what causes shooting stars! (Shooting stars arent really stars at all – just bits of falling rock!)

21 Are we in danger? Our atmosphere protects us from small meteorites because they burn up as they fall Luckily big meteorites (like the type that could hurt us) are very rare! Also, there are telescopes looking into space to watch out for any big meteorites that might be coming our way!

22 The Moon has no atmosphere, so it has no protection from meteorites Every meteorite that hits the Moon, no matter how small, makes a crater! Thats why the Moon has so many craters! What are craters?

23 You dropped an object from different heights onto your planet and measured the size of the crater Your experiment

24 Your results Question: Which combination makes the biggest craters? Now download the excel file Cratering from our website and use it to collect the class results together Jodrell Bank Discovery Centre

25 Craters: The pattern Heavy and fast meteorites make the biggest craters. This is because they hit with more energy. Get ready to test your understanding!

26 Test your understanding! Which space rock would cause the most damage? Click on a meteorite to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue Mathilde (50 km across) Gaspra (6 km across) Ida (15 km across)

27 Test your understanding! Harder question Which space rock would cause the most damage? Click on a meteorite to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue Mathilde Size = 50 km across Speed = 10,000 km an hour Gaspra Size = 6 km across Speed = 60,000 km an hour Ida Size = 15 km across Speed = 100,000 km an hour

28 Experiment: Density! What floats, what sinks?

29 Its not just size or weight that determines whether something floats or sinks Ships float even though they are very big and very heavy! What makes things float?

30 Its not just size or weight that determines whether something floats or sinks: its a combination of the two It is the amount of stuff within a certain amount of space which determines whether something will float or sink We call this density What makes things float?

31 Something which has a lot of weight, but in a small space is dense 1 kg of iron takes up a small space, so iron is dense What makes things float?

32 1 kg of feathers takes up much more space than the iron! What makes things float? This is because feathers are not very dense

33 The first four planets are more dense, because they are solid and made of rock Density & The Solar System The second four planets are much less dense, because they are made of gas

34 You placed objects in water and wrote down which objects floated and which sank Your experiment Discuss your results Are there any objects groups disagree on? How many people in the class float? How many sink? Why do you think some objects float and some sink in water?

35 If something is more dense than water, it will sink If something is less dense than water, it will float Density: The Pattern Get ready to test your understanding!

36 Test your understanding! Which planet would float in water? (Density of water = 1,000 kg/m³) Saturn Density = 687 kg/m³ Earth Density = 5540 kg/m³ Jupiter Density = 1326 kg/m³ Click on a planet to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue

37 Experiment: The Seasons! Why do we have different seasons?

38 It is all to do with the fact that the Earth is tilted in space Why do we have different seasons? The blue imaginary line is called the Earths axis The Earths axis is tilted in space by 23.5°

39 You used a tellurium to move a model of the Earth around the Sun. You answered questions about the seasons. Your experiment

40 Discuss your answers to the questions – In which season do we have long days and short nights? – When are days and nights the same length? – Why do we have different seasons? Your results

41 Here are the answers! – In which season do we have long days and short nights? SUMMER! – When are days and nights the same length? SPRING AND AUTUMN – Why do we have different seasons? BECAUSE OF THE EARTHS TILT Were you right?

42 When we are tilted towards the Sun, it is Summer When we are tilted away from the Sun, it is Winter Seasons: The pattern Get ready to test your understanding!

43 Test your understanding! Which position shows winter for the UK? Click on an Earth to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue

44 Test your understanding! Which position shows summer for the UK? Click on an Earth to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue

45 Test your understanding! Harder question Which position shows summer for Australia (southern hemisphere)? Click on an Earth to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue

46 Test your understanding! Harder question Which position shows autumn for the UK? Click on an Earth to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue

47 Experiment: How do we see? How do our eyes work?

48 Our eyes contain a lens The job of the lens is to bring together (or focus) light to the back of our eye How do we see? Did you know...? The front of your eyeball bulges outwards, so its not actually a ball shape!

49 The back of our eye contains the retina This is the part of the eye that sees the light, a bit like the film in a camera How do we see?

50 Its important that the lens focuses light onto the retina properly, otherwise we cant see very well How do we see?

51 If the lens in our eyes does not focus light properly, we can place an extra lens in front of the eye to help These are called glasses (or contact lenses)! How do we see? Did you know...? The first pair of glasses was invented in Italy in 1286!

52 Knowing about how we see and how lenses work is very important for astronomy It has allowed us to build telescopes that can see much further into space How do we see? Did you know...? The Hubble space telescope orbits above the Earth. It was launched in It still sends us fantastic views of far-away space.

53 You used two lenses on a model eye to simulate long-sightedness and short-sightedness You tried to correct the vision with other lenses Your experiment

54 Discuss your answers to the questions – Lens 2 represented short-sightedness. Which lens (4 or 5) corrected it? – Lens 3 represented long-sightedness. Which lens (4 or 5) corrected it? Your results

55 What do your rays of light look like? Your results Get ready to test your understanding!

56 Test your understanding! Which diagram shows light entering the eye correctly? Click on a diagram to see if you are right! Click the Earth to return to the contents page, or click anywhere to continue

57 Congratulations! You have completed your experiments into the Solar System. Well done! What have you learnt today? Please press Escape to exit the slideshow Jodrell Bank Discovery Centre

58 Correct! Well done! Click here to return to the previous slide Click here to return to the previous slide

59 Try again! Click here to return to the previous slide Click here to return to the previous slideWhoops!


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