Questions and Answers
The volume of a liquid can be measured using a ______ cylinder.
measuring
Density is the ratio of ______ to volume for a substance.
mass
The density of water is 1000 kg/m3 or 1.0 g/______3.
cm
One liquid will float on top of another liquid if it is less ______ than the other liquid.
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An analogue clock has ______ and can only measure time to the nearest second.
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A digital clock displays ______ and records time to a precision of at least one hundredth of a second.
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The period of one oscillation can be measured by measuring the time for 20 oscillations and then dividing the time by ______.
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The volume of a cube with sides of length $10$ cm is $1000$ cm$^3$.
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A substance with a density of $0.8$ g/cm$^3$ will float in water.
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A digital clock can measure time to the nearest tenth of a second.
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If an object displaces $50$ cm$^3$ of water when submerged, then its volume is $50$ cm$^3$.
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The period of a pendulum is the time it takes for one complete swing.
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To find the volume of a cuboid, you need to measure the length, width, and height of the cuboid and then multiply these three measurements together.
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An object that sinks in water has a density greater than the density of water.
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Study Notes
Measurement of Length and Time
- Length can be measured using a ruler.
- The period of one oscillation can be measured by dividing the time for 20 oscillations by 20.
Measurement of Volume
- The volume of a cube or cuboid can be found by multiplying the lengths of its three sides.
- The volume of a liquid can be measured using a measuring cylinder by reading the scale at the bottom of the meniscus.
- The volume of an irregularly shaped object can be found from the change in the height of liquid in a measuring cylinder when it is immersed.
Density and Buoyancy
- Density is the ratio of mass to volume for a substance: p = m/v.
- The density of water is 1000 kg/m3 or 1.0 g/cm3.
- Objects less dense than water will float, while denser objects will sink.
- Ice floats because it is less dense than water.
- A less dense liquid will float on top of a denser liquid.
Measurement of Time
- Time can be measured using a clock or watch.
- An analogue clock has hands and can only measure time to the nearest second.
- A digital clock displays numbers and records time to a precision of at least one hundredth of a second.
Measurement of Length and Time
- Length can be measured using a ruler.
- The period of one oscillation can be measured by dividing the time for 20 oscillations by 20.
Measurement of Volume
- The volume of a cube or cuboid can be found by multiplying the lengths of its three sides.
- The volume of a liquid can be measured using a measuring cylinder by reading the scale at the bottom of the meniscus.
- The volume of an irregularly shaped object can be found from the change in the height of liquid in a measuring cylinder when it is immersed.
Density and Buoyancy
- Density is the ratio of mass to volume for a substance: p = m/v.
- The density of water is 1000 kg/m3 or 1.0 g/cm3.
- Objects less dense than water will float, while denser objects will sink.
- Ice floats because it is less dense than water.
- A less dense liquid will float on top of a denser liquid.
Measurement of Time
- Time can be measured using a clock or watch.
- An analogue clock has hands and can only measure time to the nearest second.
- A digital clock displays numbers and records time to a precision of at least one hundredth of a second.
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Description
This quiz covers the basics of measurement, including measuring length using a ruler, time period of oscillations, and volume of cubes, cuboids, and liquids.
