Sunita in Space Class 5 NCERT: EVS Chapter 11 Guide

Chapter Overview: What Sunita in Space Teaches

This chapter introduces space travel through Sunita Williams, an astronaut of Indian origin who lived and worked in space. The main idea is that space is very different from Earth because gravity does not pull things down in the same way inside a spacecraft. On Earth, a pencil falls to the ground, water stays in a glass, and we walk by pushing our feet on the floor. In space, astronauts and objects float. The chapter encourages students to notice these differences instead of memorising facts. It also shows that astronauts need training, teamwork and careful planning for simple daily activities.

Key Words You Should Know

Astronaut

A person who is trained to travel and work in space.

Spacecraft

A vehicle designed to travel outside Earth and carry astronauts or equipment.

Gravity

The force that pulls objects towards Earth. It is why things fall down when we drop them.

Weightlessness

A condition in which people and objects seem to float because they are not pulled down strongly in the usual way.

Earth

Our home planet, which looks round, blue and white from space because of oceans, clouds and land.

Life on Earth and Life in Space

How to Think Through a Space-Life Question

1. Step 1: Identify the Earth activity — First ask: what is the normal activity on Earth? For example, drinking water, brushing teeth, walking, sleeping or writing.
2. Step 2: Notice the role of gravity — Think about how gravity helps on Earth. It keeps water in a glass, food on a plate, and our feet on the ground.
3. Step 3: Imagine what changes in space — In space, objects float. So the same activity needs a new method, such as using packets, straps, fixed sleeping bags or handholds.
4. Step 4: Write the answer in comparison form — A strong EVS answer says both parts: what happens on Earth and how it is different in space. This shows clear understanding, not rote learning.

Worked Examples from the Chapter

• Example 1: Why does a pen float inside a spacecraft?
  Step 1: On Earth, if we leave a pen, gravity pulls it down and it falls.
  Step 2: Inside a spacecraft in space, astronauts experience weightlessness.
  Step 3: Because of this, the pen does not fall to the floor like it does on Earth. It floats near the astronaut.
  Final answer: A pen floats in a spacecraft because objects feel weightless in space.

• Example 2: How is eating in space different from eating at home?
  Step 1: At home, food stays on a plate and we can drink from a cup because gravity holds things down.
  Step 2: In space, loose crumbs or drops of water may float away.
  Step 3: Astronauts use packed food, covered containers and special drinking tubes.
  Final answer: Eating in space needs special packets and careful handling so that food and water do not float around.

• Example 3: What can astronauts learn by looking at Earth from space?
  Step 1: From space, astronauts can see Earth as a whole, not just one city or country.
  Step 2: They can notice oceans, clouds, land, mountains and weather patterns.
  Step 3: This helps us understand that Earth is one shared home for all living beings.
  Final answer: Astronauts learn about Earth’s shape, beauty, atmosphere and connectedness by observing it from space.

Exam Tip: Write Like an EVS Observer

In this chapter, avoid giving only one-word answers such as float or gravity. Explain the reason in a full sentence. For example, instead of writing Astronauts float, write Astronauts float in space because they experience weightlessness and are not pulled down like we are on Earth. Also remember that EVS questions often ask you to compare, observe or imagine. Use words like on Earth, in space, because, different from and similar to to make your answer clear.

Common Mistakes to Avoid

• Do not say there is no gravity anywhere in space. The better Class 5 explanation is that astronauts feel weightless inside the spacecraft, so things seem to float.
• Do not write that astronauts can eat exactly like us. They need special packets and containers because food and water can float away.
• Do not confuse an astronaut with a pilot. A pilot flies aircraft in the sky, while an astronaut is trained to travel and work in space.
• Do not describe Earth from space as flat. From space, Earth appears round, with blue oceans, white clouds and land areas.
• Do not memorise only Sunita Williams’s name. Understand what her space journey teaches about gravity, teamwork, courage and scientific observation.

Practice Questions with Solutions

• Q: Why do astronauts float inside a spacecraft?
  A: Step 1: On Earth, gravity pulls our body down and keeps our feet on the ground.
  Step 2: Inside a spacecraft in space, astronauts experience weightlessness.
  Step 3: Because of this, they do not stand or walk in the usual way and seem to float.
  Final answer: Astronauts float inside a spacecraft because they experience weightlessness in space.

• Q: Describe two ways in which eating in space is different from eating on Earth.
  A: Step 1: On Earth, food stays on a plate and water stays in a glass because of gravity.
  Step 2: In space, food crumbs and drops of liquid may float away.
  Step 3: Astronauts therefore use special food packets, covered containers and drinking tubes.
  Final answer: Eating in space is different because food can float away and astronauts need special packets and tubes to eat and drink safely.

• Q: What does Earth look like from space?
  A: Step 1: Think about what covers Earth: oceans, land and clouds.
  Step 2: From far away in space, the whole Earth can be seen like a round ball.
  Step 3: Oceans look blue, clouds look white, and land may look brown or green.
  Final answer: From space, Earth looks like a round blue-and-white ball with oceans, clouds and land.

• Q: Why do astronauts need to exercise in space?
  A: Step 1: On Earth, our muscles work when we stand, walk, climb and carry things against gravity.
  Step 2: In space, astronauts float, so their muscles and bones do not work in the same strong way.
  Step 3: Exercise helps keep their body healthy and strong during space travel.
  Final answer: Astronauts exercise in space to keep their muscles and bones strong.

Frequently Asked Questions