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Test: Weather, Water and Air- 1 - Class 4 MCQ


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15 Questions MCQ Test Science for Class 4 - Test: Weather, Water and Air- 1

Test: Weather, Water and Air- 1 for Class 4 2024 is part of Science for Class 4 preparation. The Test: Weather, Water and Air- 1 questions and answers have been prepared according to the Class 4 exam syllabus.The Test: Weather, Water and Air- 1 MCQs are made for Class 4 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Weather, Water and Air- 1 below.
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Test: Weather, Water and Air- 1 - Question 1

Which of these falls in different shapes?

Detailed Solution for Test: Weather, Water and Air- 1 - Question 1

If the clouds are very cold, water vapour   condenses   to   form snowflakes of different shapes.

Test: Weather, Water and Air- 1 - Question 2

What happens when the sun heats the water on the earth's surface?

Detailed Solution for Test: Weather, Water and Air- 1 - Question 2
  • When the sun heats the water on the earth's surface, it starts to evaporate and rise up into the air. This process is like when you put a wet cloth in the sun and it dries up.
  • The water turns into tiny water droplets in the air, forming clouds. This is how the water cycle begins, where water moves from the earth into the air and back again as rain or snow.
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Test: Weather, Water and Air- 1 - Question 3

State whether the following statement is True or False:

Warm air rises up.

Detailed Solution for Test: Weather, Water and Air- 1 - Question 3
  • In the activity with the candle and matchstick, we saw that when we lit the candle, the air around it got hot.
  • When you put your hand above the flame, you could feel the heat.
  • This is because the hot air from the flame goes up.
  • So, it is true that warm air rises up.
  • This is because hot air is lighter than cold air, so it goes up towards the ceiling.
  • Remember, hot air balloons fly because they are filled with hot air that rises in the sky!
Test: Weather, Water and Air- 1 - Question 4

Which of the following causes wind to blow?

Detailed Solution for Test: Weather, Water and Air- 1 - Question 4

Due to the heat of the sun, warm air rises and cool air rushes in to take its place. This causes the wind to blow.

Test: Weather, Water and Air- 1 - Question 5

A breeze blowing from land towards the sea is known as ______.

Detailed Solution for Test: Weather, Water and Air- 1 - Question 5

When the land cools down faster than the sea at night, the cooler air above the land moves towards the warmer sea, creating a breeze. This movement of air from land to sea is called a land breeze.

Test: Weather, Water and Air- 1 - Question 6

Which two of the gases given below make up more than 95% of air?

Detailed Solution for Test: Weather, Water and Air- 1 - Question 6

95% of the air constitutes of oxygen and nitrogen.

Test: Weather, Water and Air- 1 - Question 7

What mainly causes different weather changes on Earth?

Detailed Solution for Test: Weather, Water and Air- 1 - Question 7
  • The sun's heat causes different weather changes on Earth.
  • The sun shines on different parts of the Earth at different times, making some places hotter than others.
  • This heat makes the air move around, creating wind and causing changes in the weather.
  • So, the sun plays a big role in making our weather change every day.
Test: Weather, Water and Air- 1 - Question 8

Frozen dew is called

Detailed Solution for Test: Weather, Water and Air- 1 - Question 8

Frozen dew is called frost.

Test: Weather, Water and Air- 1 - Question 9

Water changes from one state to another due to _____ and cooling.

Detailed Solution for Test: Weather, Water and Air- 1 - Question 9

Water changes from one state to another due to heating and cooling. Heating causes water to change states, such as from a liquid to a gas through evaporation, and cooling can cause it to change back from a gas to a liquid or from a liquid to a solid.

Test: Weather, Water and Air- 1 - Question 10

State whether the following statement is True or False:

Humid weather is when there is a lot of water vapor in the air, making it difficult for sweat to evaporate quickly.

Detailed Solution for Test: Weather, Water and Air- 1 - Question 10

In humid weather, there is a lot of water vapor in the air. This makes it hard for your sweat to evaporate quickly, which can make you feel hot and uncomfortable. So, the statement is True.

Test: Weather, Water and Air- 1 - Question 11

When the sun shines brightly, it heats up the ______.

Detailed Solution for Test: Weather, Water and Air- 1 - Question 11

When the sun shines brightly, it heats up the ground. This makes the ground warm and helps in creating weather changes like wind and rain.

Test: Weather, Water and Air- 1 - Question 12

On cold winter morning water vapour condenses on dust particles to form

Detailed Solution for Test: Weather, Water and Air- 1 - Question 12

On cold winter mornings water vapour condenses on dust particles to form fog.

Test: Weather, Water and Air- 1 - Question 13

Why is the water cycle important to us?

Detailed Solution for Test: Weather, Water and Air- 1 - Question 13

The water cycle helps in recycling of water from the earth to the sky.

Water Cycle - The Definitive Guide | Biology Dictionary

Test: Weather, Water and Air- 1 - Question 14

Wet clothes dry faster on a

Detailed Solution for Test: Weather, Water and Air- 1 - Question 14

Wet clothes dry fast on a sunny and windy day.

Test: Weather, Water and Air- 1 - Question 15

State whether the following statement is True or False.

Water covers about 71% of the earth's surface.

Detailed Solution for Test: Weather, Water and Air- 1 - Question 15
  • In easy words, this means that most of the earth is covered by water.
  • It is like a big blanket of water around the land. This water can be found in rivers, seas, ponds, lakes, and even in the form of ice and glaciers.
  • So, the statement is True because water does cover a large part of the earth's surface.
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