New Science eTextbook 4B (UPC)

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Before you do the assessment, revise the key concepts of this unit first. Can you do these things? Put a 3 in the . assessment

Knowledge and Understanding

Identify sources of energy. List daily activities that need energy and state the kinds of energy used. State the weaknesses of non-renewable energy, as well as the strengths of renewable energy and limitations of developing it.

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Explain what a closed circuit is. State the uses of the three main parts of a circuit. Explain the uses of switches in electrical appliances.

12

Skills and Processes

Make a wind-powered toy car to explore how the strength of the wind and the size of the sail affect the speed of the toy car. Take actions to save energy at home and at school. Make a closed circuit by assembling the circuit components. Add a switch to the circuit I made. Find out why the circuit did not work.

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Values and Attitudes

Cherish and save energy.

11

Pay attention to safety and note if there are any abnormal situations when I make a circuit.

12

1. Which topic in this unit interests you the most? What specific question do you want to explore further?

2. Which methods are you going to use when you explore the question? Put a 3 in the . observe do surveys do experiments search for information

do projects

write scientific journals

read books

others:

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