Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids

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5. Place it in the water, and let it go. 6. Challenge: Can you get your boat to move backwards and forwards? QUESTIONS: 1. What is the purpose of twisting the elastic band? To store energy in the elastic band 2. Why does the boat go? Stored energy in the elastic band is changed into movement energy of the plastic and the boat 3. How could you make the boat go in dierent directions (backwards and forwards)? Twist the piece of plastic in dierent directions. Twisting it towards the boat will make the boat move forwards, twisting it away from the boat will make it move backwards in the water. 4. Write down what you have learnt from the last two activities that you have completed. Elastic bands that are stretched or twisted store energy. The stored energy can be changed into movement energy when the elastic band is released and returns to its normal shape. We have been looking at elastic bands and how they can be stretched or twisted to store energy to do work (to produce movement). Springs can also be compressed or stretched to store energy. 48 Energy and Change
A slinky is aspring. 1 A slinky is ametal coiled spring. When you stretch a slinky spring it stores energy. When the spring is released, the stored energy is changed into movement energy as it springs back into place. Springs can also be compressed to do work. To compress something means that you squash it! Look at the photo below of a child jumping on apogo stick. This pogo stick works using a compressed spring. This spring was stretched and when released it moves back. 2 Jumping on apogo stick. 3 Chapter 3. Energy and movement VISIT Slow motion slinky spring (video). goo.gl/FwlFL 49
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Natural Sciences and Technology Gra
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AUTHORS LIST This book was written
Page 5 and 6: THE NATURAL SCIENCES AND TECHNOLOGY
Page 7: Matter and Materials and Structures
Page 12 and 13: 1 Stored energy in fuels 4 KEY QUES
Page 14 and 15: VISIT How fossil fuels are made. go
Page 16 and 17: So we can say that food is the fuel
Page 18 and 19: MATERIALS: • various packaging fo
Page 20 and 21: Coal is not only burnt in our homes
Page 22 and 23: 2. Remove both ends of the large ca
Page 24 and 25: QUESTIONS: 1. Which fuel contained
Page 26 and 27: INVESTIGATION: What happens when af
Page 28 and 29: VISIT Burning substances in air and
Page 30 and 31: 3. Write a description next to each
Page 32 and 33: 3. What causes of fire can you iden
Page 34 and 35: 3. Some points to think about when
Page 36 and 37: 1. Describe the relationship betwee
Page 38 and 39: 2 Energy and electricity 30 KEY QUE
Page 40 and 41: When the electrical energy is trans
Page 42 and 43: A car needs energy to start its eng
Page 44 and 45: Huge pylons carrying the transmissi
Page 46 and 47: ACTIVITY: 10 Safety tips for electr
Page 48 and 49: KEY CONCEPTS Never stick a metal kn
Page 50 and 51: 3 Energy and movement 42 KEY QUESTI
Page 52 and 53: 2. Tie another elastic band around
Page 54 and 55: QUESTIONS Look up adefinition for p
Page 58 and 59: QUESTIONS Use your knowledge of spr
Page 60 and 61: 4 Systems for moving things 52 KEY
Page 62 and 63: Teacher's Note You can demonstrate
Page 64 and 65: QUESTIONS Label the two wheels and
Page 66 and 67: 4. Place a few marbles or some othe
Page 68 and 69: 6. Repeat this for the other 2wheel
Page 70 and 71: The board makes bearings for the ax
Page 72 and 73: INSTRUCTIONS: Things you can use fo
Page 74 and 75: REVISION: 1. List four dierent vehi
Page 78 and 79: 1 Planet Earth 70 KEY QUESTIONS •
Page 80 and 81: • The Earth spins right around in
Page 82 and 83: 3. Was it daytime in Saudi Arabia?
Page 84 and 85: VISIT Short video showing the sun,
Page 86 and 87: The planets move in orbits around t
Page 88 and 89: MATERIALS: • 100m heavy string
Page 90 and 91: Teacher's Note Make sure to point o
Page 92 and 93: 2 Surface of the Earth 84 KEY QUEST
Page 94 and 95: QUESTIONS: 1. What is under the flo
Page 96 and 97: Imagine we could cut aslice out of
Page 98 and 99: QUESTIONS 1. If you dig ahole in th
Page 100 and 101: Teacher's Note Iron melts at those
Page 102 and 103: The hole will come to of the other
Page 104 and 105: Look at the place where the water h
Page 106 and 107:
VISIT Rocks erode to form soil (vid
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ACTIVITY: Make a model of acid wate
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ACTIVITY: Look at dierent kinds of
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MATERIALS: • 3 big cool drink bot
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In the beginning, you might think t
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The topsoil has gone from this land
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INSTRUCTIONS: 1. Collect two tins o
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QUESTIONS 1. Can you make pots with
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VISIT Interesting website about soi
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QUESTIONS: 1. Are the drops on the
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Set up the soils as you see in the
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Which soil type do plants grow best
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Average height grown by seedlings i
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Answer: Crust, mantle, core. 2. Wha
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3 Sedimentary rocks VISIT Dierent r
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Sediments When the sand grains coll
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2. Which is the oldest sediment? Th
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Look at the layers in the sedimenta
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This is how the mountains look now.
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A sculpture made from limestone. 10
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Cement is also made from shale. The
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4 Fossils 140 KEY QUESTIONS • Wha
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VISIT When a T-Rex attacks! (video)
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VISIT How are fossils formed? goo.g
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Teacher's Note Of course, it's much
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Teacher's Note Note that the mould
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There was a flood and the river ros
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A footprint which has hardened in t
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Do you know where this is in South
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VISIT Finding the coelacanth (video
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I just love learning more and more
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ACTIVITY: Thinking about the Cradle
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REVISION: 1. Are animal fossils mad
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5 Notes 164 Chapter 1 Stored energy
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Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids

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