Reema has a multi-coloured disc. She inds that the disc appears white when she spins it rapidly. 7. What can be concluded from the picture? A. All discs are multi-coloured B. All spinning objects appear white C. Objects lose its colour on spinning D. White is a mixture of seven different colours 8. Which of these objects relects light? A. The Sun B. The Moon C. A glowing bulb D. Burning wood

7. D. White is a mixture of seven different colours 8. B. The Moon

Reema has a multi-coloured disc. She inds that the disc appears w…

Fire extinguisher $K$ is suitable for kitchen fires.

$5.$ Which ire extinguisher can perform most of the work of $K?$
$A. P$
$B. Q$
$C. R$
$D. S$
$6.$ How does dumping sand on ire extinguish the flame$?$
$7.$ Which of these materials is combustible$?$
$A.$ Steel
$B$. Wood
$D.$ Marble
$C.$ Glass

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Mayank dropped four coins from the same height onto a concrete floor.

The table below shows the type of sound that each coin produced after hitting the floor.

Coin	Temperature of the ball when heated for a minute
Coin $1$	Ringing sound
Coin $2$	Damp sound
Coin $3$	Damp sound
Coin $4$	Ringing sound

$9.$ Which coins in Mayank’s activity are made of metal$?$
$A.$ Coin $1$ and Coin $2$
$B.$ Coin $2$ and Coin $3$
$C.$ Coin $3$ and Coin $4$
$D$. Coin $4$ and Coin $1$
$10.$ On which type of loor will Mayank’s activity produce the same results$?$
$A.$ Glass
$B.$ Sand
$C.$ Grass
$D.$ Carpet

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Which of these is true about the four sound waves$?$
Circle ‘Yes’ or ‘No’ to mark your responses.

Animal	Frequency range of sound waves
Elephant	$15–12000\ Hz$
Human	$20–22000\ Hz$
Dog	$65–45000\ Hz$
Chicken	$125–2000\ Hz$

$5.$ A cat made a purring sound that had a frequency of $35\ Hz.$
Which of the animals mentioned in the table can hear the purring$?$
$A.$ Only human
$B.$ Only elephant
$C.$ Dog and chicken
$D.$ Elephant and human
$6.$ Which of the following sounds can be classiied as noise for humans$?$
$A.$ Sounds that are softer than $20\ dB$
$B.$ Sounds that are in between $20\ dB$ and $40\ dB$
$C.$ Sounds that are between $40\ dB$ and $80\ dB$
$D.$ Sounds that are louder than $80\ dB$
$7.$ Which of these will reduce noise pollution?
Circle ‘Yes’ or ‘No’ to mark your responses.

Will this reduce noise pollution?	Yes or No
Regulating the use of loudspeakers	Yes/No
Setting up more thermal power plants	Yes/No
Using more electric vehicles	Yes/No

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The diagram shows how a planet rotates on its axis as it revolves around the Sun.

$9.$ What can be concluded about the planet from the diagram?

Can this be concluded from the diagram?	Yes or No
The planet rotates from east to west.	Yes/No
The planet does not experience change of seasons.	Yes/No
The planet rolls on its orbit as it revolves around the Sun.	Yes/No

$10.$ What is the word used for a celestial object that has a bright head and a long tail?
$A.$ Comet
$B.$ Meteor
$C. $ Asteroid
$D.$ Meteorite

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The picture shows four different rubber tubes.

$5.$ Which tube will experience the least friction while rolling on a surface?
Explain your answer.
$6.$ Which of these would affect the amount of friction generated on a moving object$?$
Circle ‘Yes’ or ‘No’ for the correct response.

Does this Affect the Amount of Friction Generated?	Yes or No
Mass of the object	Yes/No
Surface area of the object	Yes/No
Roughness of the object	Yes/No

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The picture shows three types of cells.

$3.$ Which cell is most likelyto be an amoeba$?$
$4.$ Which of these is the correct order of arrangement from smallest to largest$?$
$A.$ cell$\rightarrow $organ$\rightarrow $tissue
$B.$ tissue$\rightarrow $cell$\rightarrow $organ
$C.$ cell$\rightarrow $tissue$\rightarrow $organ
$D.$ organ$\rightarrow $tissue$\rightarrow $cell
$5.$ Which scientist discovered cells in living organisms$?$
$A.$ Louis Pasteur
$B$. Robert Hooke
$C.$ Gregor Mendel
$D.$ Charles Darwin

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Polaris is a star that always appear at the same point in the night sky.

$7.$ Why does Polaris appear at the same location over time$?$
$A.$ It is a part of our solar system
$B.$ It is too far away from the Earth
$C.$ It is situated along the Earth’s axis
$D.$ It is held in its position by the Earth’s gravity
$8.$ What is Polaris commonly known as$?$

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The diagram shows the focus of an earthquake
Focus is the point inside the Earth’s crust where the earthquake originates.
$1, 2, 3$ and $4$ are four locations on the Earth’s surface.

$6.$ In which location will the effect of the earthquake be maximum$?$
$A.$ Location $1$
$B.$ Location $2$
$C.$ Location $3$
$D.$ Location $4$
$7.$ Raju was in his garden when an earthquake hit the place.
What should Raju do to remain safe$?$
$A.$ Move to an open space
$B.$ Run away from the place
$C.$ Take shelter under a staircase
$D.$ Take shelter under a large tree

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Richter scale measures the strength of earthquakes.

Richter scale measurement of the earthquake	Example of damages due to the earthquake
$3.0 – 3.9$	No damages but some vibrations felt
$4.0 – 4.9$	Cracks in windows, some unstable objects fall
$5.0 – 5.9$	Building walls may collapse, movement of furniture
$6.0 – 6.9$	Building roofs may collapse, loss of few lives
$7.0 – 7.9$	Cracks on ground, underground pipes broken, loss of many lives

$9.$ The damages from an earthquake are listed below.
● $2$ people died
● $5$ building roofs collapsed
● $12$ building walls collapsed
What could be the likely reading on the Richter scale for the earthquake$?$
$A. 4.8$
$B. 5.4$
$C. 6.5$
$D. 7.3$
$10.$ Which of these statements is trueabout earthquakes$?$
$A.$ Earthquakes can cause soil erosion
$B.$ Most of the earthquakes occur in mountain regions
$C.$ The location and duration of earthquakes can be predicted
$D.$ Earthquakes are caused by the movement of underground plates

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The picture shows how a part of the Moon $(X)$ is seen as it rotates around the Earth.

$3.$ What will be the position of $X$ at Stage $4?$

$4.$ Why can’t living things survive on the Moon$?$
Circle ‘Yes’ or ‘No’ for the correct response.

Is the statement true$?$	Yes or No
There is no water on the Moon.	Yes/No
There is no oxygen on the Moon.	Yes/No
There are many high mountains on the Moon.	Yes/No

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