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

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QUESTIONS Label the two wheels and the axle in the following diagram. Wheels and axle. 2 When we think of wheels and axles, we think of cars and other vehicles that we see all around us that have wheels. A wagon wheel and axle. 3 However, there are many examples of machines that use wheels and axles: 1. rolling pin 2. windmill 3. fan 4. egg beater 5. door knob 6. bicycle wheels 56 Energy and Change
ACTIVITY: Identifying vehicles with wheels 1. Find pictures of three of the above examples. Look in old magazines and newspapers at home, or on the internet for pictures. Paste the pictures in below and label the axle and the wheel in each picture. 2. Explain carefully how a door knob is awheel and axle machine. A door knob has alarge cylinder on the outside, attached to a small cylinder on the inside. It is easier to turn the large cylinder than the small cylinder with your hands. Let's make a simple wheel and axle mechanism to understand how it works. ACTIVITY: A simple wheel and axle machine MATERIALS: • 2 chairs • broom handle • string • bucket with handle • masking tape • scissors • ruler INSTRUCTIONS: 1. Place the chairs back to back, about 30 cm apart. Rest the broom handle across the back of the chairs. 2. Tie a 50 cm length of string to the bucket handle. 3. Tape the free end of the string to the middle of the broom handle. Chapter 4. Systems for moving things 57
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Natural Sciences and Technology Gra
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AUTHORS LIST This book was written
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THE NATURAL SCIENCES AND TECHNOLOGY
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Matter and Materials and Structures
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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 56 and 57: 5. Place it in the water, and let i
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 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
Page 108 and 109: ACTIVITY: Make a model of acid wate
Page 110 and 111: ACTIVITY: Look at dierent kinds of
Page 112 and 113: 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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