NSO Level 1- Science Olympiad (SOF) Class 3: Questions 459 - 462 of 504

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Question 459

Question

MCQ▾

Keshav is pushing a box as shown in the figure. On which surface is it easier to move the box?

Figure Shows Keshav Pushing a Box

Choices

Choice (4)Response

a.

Dry surface

b.

Hot surface

c.

Wet surface

d.

Rough surface

Question 460

Question

MCQ▾

The given diagram shows the positions of the shadows cast by a block at four different times during a day. Which of the following options matches the shadow with the correct time?

Diagram Shows the Positions of the Shadows Cast by a Block

Choices

Choice (4)Response

a.

b.

c.

d.

Question 461

Question

MCQ▾

Seelu sets up an apparatus as shown in the diagram. She sets up the alarm clock to ring six minutes later, places it in the bell jar and switches on the vacuum pump. Will she be able to hear the alarm clock when it rings six minutes later?

Diagram Shows the Alarm Clock Places It in the Bell Jar

Choices

Choice (4)Response

a.

No, because sound travel in vacuum.

b.

Yes, because sound need air (medium) to travel.

c.

No, because sound needs air (medium) to travel.

d.

Yes, because sound cannot travel in vacuum.

Question 462

Question

MCQ▾

A torch is shone on a wooden prism and a beach ball as shown below.

Figure of Torch is Shone on a Wooden Prism and a Beach Ball

What will be the shape of shadow observed on the screen?

Choices

Choice (4)Response

a.

Image Shows the Shape of Shadow on the Screen: Choice A

b.

Image Shows the Shape of Shadow on the Screen: Choice B

c.

Image Shows the Shape of Shadow on the Screen: Choice C

d.

Image Shows the Shape of Shadow on the Screen: Choice D

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