MATCH THE FOLLOWING: Column A Column B 1. Units of measurement (a) Floating objects 2. Mercury (b) Plimsolls line 3. Density of irregular solids (c) metal 4. International Load Line (d) Eureka can 5. Boats and ships (e) mass, length and time

1. Units of measurement - (e) mass, length and time Mass, length and time are units of measurement. Mass is the amount of matter present in a body. The measure of distance is known as length. We can measure time with the help of clocks. 2. Mercury - (c) metal Mercury is the only metal that exists as a liquid at room temperature. The electrons in a mercury atom are bound to the nucleus more closely than normal. An iron ball will float in mercury because the density of iron ball is less than that of mercury. 3. Density of irregular solids - (d) Eureka can A eureka can is based on Archimedes’ principle according to which the amount of water displaced by an object is equal to its volume. It can be used to determine the density of irregular solids. 4. International Load Line - (b) Plimsolls line The Plimsolls line, also called International Load Line, is a reference mark located on a ship's hull that indicates the maximum depth to which the vessel may be safely immersed when loaded with cargo. 5. Boats and ships - (a) Floating objects Boats and ships are floating objects. Their floating is based on Archimedes principle. According to this principle, anybody partly or wholly immersed in a liquid experience an upward force called upthrust which is equal in magnitude to the weight of the liquid displaced by the body. Column A Column B 1. Units of measurement (e) mass, length and time 2. Mercury (c) metal 3. Density of irregular solids (d) Eureka can 4. International Load Line (b) Plimsolls line 5. Boats and ships (a) floating objects

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New Trends in ICSE Physics 8>Chapter 2 - Physical Quantities and Measurement>EXERCISES>Q 4

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Solids have a lower density than liquids.

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Important Questions on Physical Quantities and Measurement

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New Trends in ICSE Physics 8>Chapter 2 - Physical Quantities and Measurement>EXERCISES>Q 5

A piece of wood sinks in water.

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New Trends in ICSE Physics 8>Chapter 2 - Physical Quantities and Measurement>EXERCISES>Q 1

Choose the odd one out by giving a reason.

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New Trends in ICSE Physics 8>Chapter 2 - Physical Quantities and Measurement>EXERCISES>Q 2

Choose the odd one out giving the reason.

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New Trends in ICSE Physics 8>Chapter 2 - Physical Quantities and Measurement>EXERCISES>Q 3

Choose the odd one out by giving a reason.

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New Trends in ICSE Physics 8>Chapter 2 - Physical Quantities and Measurement>EXERCISES>Q 4

Choose the odd one out by giving a reason.

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New Trends in ICSE Physics 8>Chapter 2 - Physical Quantities and Measurement>EXERCISES>Q 5

Choose the odd one out by giving a reason.

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New Trends in ICSE Physics 8>Chapter 2 - Physical Quantities and Measurement>EXERCISES>Q 1

MATCH THE FOLLOWING:

Column A	Column B
1. Units of measurement	(a) Floating objects
2. Mercury	(b) Plimsolls line
3. Density of irregular solids	(c) metal
4. International Load Line	(d) Eureka can
5. Boats and ships	(e) mass, length and time

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New Trends in ICSE Physics 8>Chapter 2 - Physical Quantities and Measurement>EXERCISES>Q 1

A reference mark located on a ships hull that indicates the maximum depth to which the vessel may be safely immersed when loaded with cargo. (International Load Line/ Water Line/ Deck Line)

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