12. TimeĀ – 1                Worksheet Solutions

Multiple Choice Questions (MCQs)

(i) The period of time from sunrise to sunset in a given place, is called a
(a) day
(b) evening
(c) morning
(d) night
Ans: (a)

Day is the time when the Sun is up in the sky.

Day and Night

(ii) A year has
(a) thirteen months
(b) twelve months
(c) two months
(d) seven months

Ans: (b)

A year is of 12 months: January, February, March, April, May, June, July, August, September, October, November, and December.

Months of Year

(iii) Equipment that help us to know the time of the day are
(a) months and years
(b) days and nights
(c) clocks and watches
(d) none of these
Ans: (c)

Clocks and watches tell us the time of day

Clock

Fill in the Blanks.(i) Time before ______ is AM.
Ans: Time before afternoon is AM.

Time before 12 noon is called A.M. Time after that is P.M. 

(ii) The Earth receives light from the ______.
Ans: 
The Earth receives light from the Sun.

The Sun gives us light and warmth, and helps plants grow.

(iii) The part of the ______ that faces the Sun has day.
Ans: 
The part of the earth that faces the Sun has day.

When one side of the Earth faces the Sun, it is day there. The other side has night.

Match the Following.

Ans:

True and False.

(i) A year has 240 days.
Ans: False
A normal year has 365 days, and a leap year has 366 days.

(ii) A clock has one to twelve numbers. 
Ans: True
A clock shows 12 numbers to tell the time.

(iii) Every hour has 65 minutes. 
Ans: False
Every hour has 60 minutes.

Rotation of Earth causes Day and Night

Short Answer Questions.

(i) What is a leap year?
Ans: 

  • AĀ leap yearĀ hasĀ 366 days.
  • It comes every 4 years.
  • February hasĀ 29 daysĀ in a leap year.

(ii) What is revolution?
Ans: 

  • The EarthĀ goes around the SunĀ in a fixed path.
  • This movement is calledĀ revolution.
  • It causes theĀ seasonsĀ to change.

(iii) What is rotation?
Ans: 

  • The EarthĀ spins like a topĀ on its own axis.
  • This spinning is calledĀ rotation.
  • Rotation causesĀ day and night.
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