__________ are the building clocks of matter a) Atoms b) Molecules c) Elements d) None of these 2. 1 micron is equal to ___________ metres a) 10–2 b) 10–6 c) 10 d) 10 6 3. A kink is present in __________ a) clinical thermometer b) laboratory thermometer c) both (a) and (b) d) none of these II. Fill in the planks: 3 x 1 = 3 1. __________ clock is used to measure smaller time intervals. 2. The different states of matter are __________ 3. __________ of an object can be determined using graph paper. III. State whether the statements are true or false correct the false statements: 3 x 1 = 3 1. Solids can be beaten into thin sheets. 2. Mercury has a tendency of sticking to the glass. 3. The normal temperature of a human body is 42°C. IV. Match the columns: 4 x ½ = 2 1. – 10°C to 110°C – Tonne 2. Mass – liquid 3. Solid to liquid – laboratory thermometer 4. Fixed volume, indefinite shape – heating V. Answer in one word: 2 x 1 = 2 1. Intermolecular space 2. Temperature VI. Solve the following problems : 2 x 1 = 2 1. _________ quintal = 200 kg 2. 5 hours = _______min VII. Answer the following : 5 x 2 = 10 1. Give reason for the following statement. Why solid expands very little on heating. 2. How is an atom different from molecule? 3. Differentiate solids and gases. 4. Differentiate beam balance and electronic balance. 5. What are the two important things to be mentioned when specifying measurement of a physical quantity? 6. The system of units should be uniform every where to avoid confusion in measurement. 7. Define parallax error. VIII. Answer in detail : 1 x 5 = 5 1. How does a pendulum clock work? (OR) State important characteristics of molecules of matter.
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Answered by
7
Answer:
1.a) Atoms
2.
3.a) clinical thermometer
fill in the blanks
4.stop watch
5.interchangeable
6.slope
Answered by
1
Answer:
1.Molecules
2./1,000,000
3. 3
Explanation:
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