GR4: 3RD QTR SCIENCE EXAMINATION

Identify the how heat flow in the illustration.

a

c

e

Convection

Radiation

Evaporation

Insulation

Condition

Conduction

Light has an ability to pass through some objects.

Which of the following materials will not allow light to pass through it?

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Sunlight is a mixture of all colors of light. Light is absorb by the objects and the object reflects the color that we see.

What is the color reflected by a black object?

• all colors

• black

• white

• none

The loudness of a sound depends on the amplitude of the wave.

Match each object to its correct sound wave.

• Playing piano

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• Whistling train

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• Falling of leaves

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The pitch of a sound depends on the size of the wavelength.

Match each object to its correct sound wave.

• noise of a crowd

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• bird chirping

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• horn of a truch

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What property of light is shown in the picture?

• Reflection

• Refaketion

• Refraction

• Refriction

Which of the following object will reflect light?

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• 
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• 

What type of magnetic force is shown in the video?

• Attracting Force

• Electrostatic Force

• Repulsive Force

• Gravitational Force

Which of the following magnets will create a repulsive magnetic force?

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• 
• 
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What type of non-contact force are shown in the picture?

• Gravitational Force

• 
• Electrostatic Force

• 
• Magnetic Force

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