Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids
Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids
Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids
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REVISION:<br />
1. List four dierent vehicles which make use of wheels <strong>and</strong><br />
axles in order to move.<br />
Car, truck, bicycle, pram, motor bike, trolley, etc.<br />
2. When Jojo was experimenting with making wheels, he<br />
decided to use bottle lids. Look at the picture below. He<br />
decided that glueing two lids together was better than one<br />
lid. Explain why you think Jojo did this.<br />
Jojo glued two lids together.<br />
Jojo did this because one lid was probably unstable <strong>and</strong><br />
wobbled, whereas two lids are more stable <strong>and</strong> do not<br />
wobble.<br />
3. When Jojo made the axles for his tractor, it looked like this<br />
underneath:<br />
The axles under Jojo's tractor.<br />
What is wrong with these axles <strong>and</strong> how do you think the<br />
66 Energy <strong>and</strong> Change