Fill in the Blanks

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Last edited 26 days ago by Learn LoopHQ.

Chapter: 03. Physical Quantities And Measurement 2

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Fill in the Blanks

The accurate measurement of _ _ _ _ _ _ _ _ _ _ _ _ _ _ helps us to schedule and coordinate our daily activities.

time

A mean solar day is the time taken by the Earth to complete one _ _ _ _ _ _ _ _ _ _ _ _ _ _ about its own axis.

rotation

The standard unit of time in SI system is _ _ _ _ _ _ _ _ _ _ _ _ _ _.

second

1 hour is equal to _ _ _ _ _ _ _ _ _ _ _ _ _ _ seconds.

3600

A _ _ _ _ _ _ _ _ _ _ _ _ _ _ measures time by the position of the shadow cast by sun.

sundial

The _ _ _ _ _ _ _ _ _ _ _ _ _ _ Yantras at the Jantar Mantar in Jaipur and Delhi are examples of sundials.

Samrat

The 12-hour clock divides the day into two periods: ante meridiem (a.m.) and _ _ _ _ _ _ _ _ _ _ _ _ _ _ (p.m.).

post meridiem

In the 24-hour clock convention, the time interval after midnight to 12 noon is recorded as 0000 to _ _ _ _ _ _ _ _ _ _ _ _ _ _ hours.

1200

_ _ _ _ _ _ _ _ _ _ _ _ _ _ clocks are the most precise time-measuring devices that measure time according to the vibrations within atoms.

Atomic

Temperature is the degree of _ _ _ _ _ _ _ _ _ _ _ _ _ _ or coldness of a body.

hotness

The standard unit of temperature in SI system is _ _ _ _ _ _ _ _ _ _ _ _ _ _.

kelvin

An instrument used to measure temperature is called a _ _ _ _ _ _ _ _ _ _ _ _ _ _.

thermometer

The laboratory thermometer typically has graduations marked in degrees from _ _ _ _ _ _ _ _ _ _ _ _ _ _ to 110° C.

-10° C

The normal body temperature of a person is _ _ _ _ _ _ _ _ _ _ _ _ _ _ or 98.6° F.

37° C

The clinical thermometer has a slight bend or kink called a _ _ _ _ _ _ _ _ _ _ _ _ _ _ just above the bulb.

constriction

To avoid _ _ _ _ _ _ _ _ _ _ _ _ _ _ error, ensure your eye is in line with the mercury level while taking the reading from a thermometer.

parallax

_ _ _ _ _ _ _ _ _ _ _ _ _ _ are becoming more popular for measuring body temperature as they do not use mercury.

Digital thermometers

Heat refers to the form of _ _ _ _ _ _ _ _ _ _ _ _ _ _ that gives the sensation of hotness or coldness of a body.

energy

The SI unit of heat is _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Joule

A _ _ _ _ _ _ _ _ _ _ _ _ _ _ is a device that collects and measures the amount of rain.

rain gauge

In India, an atomic clock is located in the _ _ _ _ _ _ _ _ _ _ _ _ _ _ (NPL), New Delhi.

National Physical Laboratory

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