GR4: 3RD QTR SCIENCE EXAMINATION

Identify the how heat flow in the illustration.

a

c

e

Evaporation

Insulation

Radiation

Conduction

Condition

Convection

Light has an ability to pass through some objects.

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

• 
• 
• 
• 

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.

• Falling of leaves

• 
• Whistling train

• 
• Playing piano

• 

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

Match each object to its correct sound wave.

• horn of a truch

• 
• noise of a crowd

• 
• bird chirping

• 

What property of light is shown in the picture?

• Reflection

• Refaketion

• Refraction

• Refriction

Which of the following object will reflect light?

• 
• 
• 
• 

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?

• 
• 
• 
• 

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

• Gravitational Force

• 
• Electrostatic Force

• 
• Magnetic Force

•