chapter 3 class 5

Class 5

Chapter 3

Movements Of The Earth- Their Effects

Worksheet

Oral Questions:

1.     What is a leap year?

Ans: A year with 366 days is known as leap year.

2.     What causes day and night?

Ans: Rotation

Give a Single Word or a phrase for each of the following:

1.     The imaginary line on which the earth rotates:_____ (axis)

2.     The time taken by the earth to complete one revolution____ (365 ¼ days)

3.     This causes day and night_____ (rotation)

Write Short Questions:

1.     What are the two movements of the earth?

Ans: Rotation and Revolution

3.     Name the four seasons.

Ans: Summer, Winter, Autumn and Spring

4.     When there is summer in the northern hemisphere, which season does Southern Hemisphere experience?

Ans: Winter

Answer the Following Questions:

1.     Explain the terms: (a) Axis   (b) Orbit.

Ans: (a) Axis:- an imaginary line drawn through the centre of the earth joining North and South poles is called axis.

(b) Orbit: The earth moves round the Sun on a fixed path. This fixed path is known as orbit.

2. Discuss the effects of the rotation.

Ans: The rotation of the earth causes day and night.

When the earth rotates only one part of the earth faces sun, while the other part of the earth remains away from the sun.

The part that faces the sun receive sunlight and has day, while the other part is in darkness and has night.

(NOTE:- Here children will draw the diagram given on the page number 17)

2.     How are season caused? Explain with the help of a diagram.

Ans: The revolution of the earth (on a tilted axis) around the sun causes seasons.

When one part of the earth faces sun, the other part is away of the sun.

The part of the earth that faces the sun experiences summer, while the other part experiences winter.

(NOTE: Here the children will draw the diagram given on page no. 19)

3.     What is a leap year? How is it caused?

Ans: The earth completes one revolution in 365 ¼ days .

We have 365 days on our calender.

The ¼ day of every year is added to make an extra day.

This extra day is added every fourth year to the month of February.

Hence, February has 29 days every fourth year instead of 28 days.

A year with 366 days is known as leap year.

Higher Order Thinking Skill:

Q1. Do you know in which hemisphere is the city you live in- Northern Hemisphere or Sothern hemisphere? Which seasons are you experiencing now? Why?

Ans: I live in Ferozepur, India. It is located in Northern Hemisphere.

These days we are experiencing summer season.

This is because the Northern hemisphere is facing the sun these days.

VALUE CORNER:-

Q. The earth works on a schedule, guiding us to schedule our life too. Do you work according to the schedule? How? Explain giving examples.

Ans: Yes I work according to the schedule. As I get up early and go to bed early well in time.

I am never late for the school.

I do my homework regularly.

I always work according to the time table.