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اروع مودار او و او و اوره ب و و س / در و دیوار و
Name the natural magnes
Section - BOV 29 to 36 contains 10 ultiple choice questions cachestionaries
Give the names of any two So animals that do not have a streamlined body
2.
Which is the device that completes or breaks in cloctric circuit!
List any iwo luminous objects. SC
m Express the height in cm
Name the process which helps you to dry wet clothes during summer
which is the gas used by plants for preparing food?
Which organ in red worms helps them in grinding food?
The height of a boy is 1.23
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9.
What type of motion do the following objects have?
An apple falling from a tree.
(b) Pendulum of a clock.
(c) Wheels of a moving car.
(d) A spinner (toy)
محے گزاری
10
How will you prove that air occupies space?
Write any four properties of materials.
.
12. Explain with an activity that water vapour is present in the atmosphere
13. How will you find the direction of your friend's home using a compass?
What is an electric circuit? Name the thin wire that gives off light in an electric bu
Irite the scientific terms for the following
Answers
Answer:
1. a lodestone is a natural magnet.
2. octopus and squid don't have streamlined body.
3. electric swtich completes or break down the circuit.
4. electric bulb and torch are luminous objects.
5. evaporation helps in drying wet clothes.
6. CO2 carbon dioxide is used by plants to make food.
7. gizzard help red worms to grind food.
8. falling of apple is rectilinear motion, pendulum of a clock is oscillatory motion, wheels of moving car is rotary motion, and a spinner has rotary motion.
10 . Experiment - To show air occupies space
Procedure - A glass bowl is half filled with water. An empty glass tumbler is inverted inside the bowl.
When the tumbler is tilted, bubbles are seen in water.

Observation - The air was occupying space inside the tumbler, and on tilting air is displaced and bubbles come out because of that.
Conclusion - Air occupies space.
12.Take ice cubes in a beaker and keep it in an open place for some time. You will notice that around the beaker there are some water droplets. This droplets formed are due to condensation of water vapor around the beaker. This confirms the presence of water vapour in the air.