Science : Light

Shadows are formed because light ______________.

• travels in a straight line.

• is a show.

• is colourful.

• bends to all sides.

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NGSS.MS-PS4-2

______________ is an example of a translucent object.

• Clear glass

• Mirror

• Tracing paper

• Wood

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NGSS.MS-PS4-2

Look at the picture. The experiment shows that a glass of tea is ______________ object.

• a luminous

• a translucent

• a transparent

• an opaque

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NGSS.MS-PS4-2

The picture shows a boy standing under the sun. The shadow on the ground has the same shape as the boy. What does this show?

• Light can bend.

• Light can be reflected.

• Light can pass through an opaque object.

• Light travels in a straight line.

In the picture, three screens are arranged in a straight line. The candle flame can be seen by Abd Hamid from the other end. But if one screen is moved slightly to one side, he cannot see the candle flame from the other end.

Why does this happen?

• Light can bend around corners.

• Light stays in one place only.

• Light can travel in a straight line only.

• Light travels in zig zag direction.

Tags

NGSS.MS-PS4-2

The boy in the picture is reading a book. Why is the boy able to read the book?

• Because light travels from his eyes to the book.

• Because light travels from the book and reflects to the sun.

• Because light travels from the sun and his eyes on to the book.

• Because light travels to the book and reflects to his eyes.

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NGSS.4-PS4-2

A glass prism can be used to split the white light into different colours as shown in the picture.

What are the colours?

• Blue, pink, yellow, purple and green.

• White, gold, silver, black, magenta and turquoise.

• Red, orange, yellow, green, blue, indigo and violet

• Red, orange, yellow, pink, green, blue and purple.

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NGSS.MS-PS4-2

During a thunderstorm you see the lighting before you hear the thunder. This is because ______________.

• Light travels faster than sound.

• Light is racing with sound.

• Sound travels a longer distance than the light.

• Sound and light travel at the same speed.

The source of the colours in a rainbow is ______________.

• air

• clouds

• sunlight

• sky

Look at the picture. Which of the following is the correct shadow for the paper cup?

• 
• 
• 
• 

Tags

NGSS.4-PS4-2