Earth to Space

| Class 5 | EVS Tetbook | Chapter 11

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Here are the answers to the “Improve Your Learning” section from the lesson “Earth to Space” for Class 5 EVS.

I. Conceptual Understanding

1. What are the differences between latitudes and longitudes?

• Latitudes:

• These are horizontal imaginary lines on the globe.

• They run parallel to the Equator.

• They help in measuring distances north or south of the Equator.

• Longitudes:

• These are vertical imaginary lines on the globe.

• They converge at the poles and are widest at the Equator.

• They help in measuring distances east or west of the Prime Meridian.

2. What do you know about the globe?

• The globe is a miniature model of the Earth.

• It shows continents, oceans, countries, and important geographical locations.

• It helps in understanding latitudes, longitudes, and Earth’s rotation.

• The globe is useful in learning about climate zones, time zones, and different regions of the world.

3. What is the shape of the Earth?

• The Earth is round (spherical) in shape.

• Though the Earth looks flat in small areas, satellite images confirm that it is round.

• Ferdinand Magellan’s voyage around the world proved that the Earth is not flat.

• The shadow of the Earth on the Moon during a lunar eclipse is always circular, further proving its round shape.

II. Questioning and Hypothesis

4. What will happen if the Earth stops its rotation?

• There will be no day and night cycle; one side of the Earth will have continuous daylight and the other side will have continuous darkness.

• Gravity and atmospheric conditions will change, leading to severe natural disasters.

• Oceans and winds will stop moving in their normal patterns, causing climate changes and extreme weather.

• The Earth’s magnetic field may weaken, exposing us to harmful space radiation.

III. Experiments and Field Observations

5. Prepare a model of the solar system and explain it.

• Take balls of different sizes to represent the planets.

• Use a large yellow ball to represent the Sun.

• Arrange the planets in order from the Sun:

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

• Show the revolution of planets around the Sun using circular paths.

• Explain that planets revolve around the Sun due to gravitational force.

IV. Information Skills and Projects

6. Collect the names of artificial satellites sent by India and write about their purposes.

V. Drawing and Model Making

7. Draw latitudes and longitudes on a ball and explain them.

• Steps:

1. Draw horizontal lines (latitudes) parallel to the Equator.

2. Draw vertical lines (longitudes) from the North Pole to the South Pole.

3. Mark the Prime Meridian (0° longitude) and the Equator (0° latitude).

4. Label important latitudes like Tropic of Cancer, Tropic of Capricorn, Arctic Circle, and Antarctic Circle.

VI. Appreciation, Values, Application to Daily Life, Biodiversity

8. Why is Earth the only habitat for human beings?

• Earth has oxygen and an atmosphere, which are essential for life.

• It has liquid water, necessary for drinking and survival.

• Earth has a moderate temperature that allows humans, animals, and plants to thrive.

• The protective ozone layer shields us from harmful radiation.

• Gravity holds everything in place and makes life possible.

• No other planet in our solar system has these perfect conditions for human survival.

These answers help students understand Earth’s features, space, satellites, and the importance of the planet in supporting life.