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SCIENCE GRADE 8 NO.1

Total questions: 13

Worksheet time: 7mins

Name
Class
Date
1.

This English physicist, mathematician, and natural philosopher advocated the corpuscular theory of light, also known as the particle theory.

a)

Isaac Newton

b)

Albert Einstein

c)

Christiaan Huygens

2.

A Dutch physicist and astronomer who theorized that light consists of a series of transverse waves sent out by a luminous body.

a)

Isaac Newtonn

b)

Albert Einstein

c)

Christiaan Huygens

3.

A British physicist proposed the electromagnetic theory of light.

a)

James Clark Maxwell

b)

Isaac Newton

c)

Louis Victor de Broglie

4.

According to this French physicist, any moving particle or object has an associated wave.

a)

Albert Einstein

b)

Louis Victor de Brogile

c)

Christiaan Huygens

5.

A German physicist and Nobel laureate, proposed the quantum theory of light.

a)

Louis Victor de Brogile

b)

Max Planck

c)

Christiaan Huygens

d)

Isaac Newton

6.

German physicist observed that the ray of light is the part taken by the photon traveling in a straight line.t Einstein

a)

Albert Einstein

b)

Isaac Newton

c)

Thomas Edison

7.

A source of light that are naturally occurring in nature.

4 lines
8.

A source of light that are man-made.

4 lines
9.

It is the measurement of the brightness of a light source is called

a)

photometry

b)

luminous intensity

c)

illumination

d)

luminous flux

10.

It is capable of emitting its own light using the energy of oscillating particles.

a)

photometry

b)

luminous intensity

c)

luminous flux

d)

illumination

11.

Objects that are made visible because of light reflected from it are called?

4 lines
12.

These waves resemble other types of waves in some features, such as wave length, frequency, amplitude, period, and speed.

a)

sound waves

b)

light waves

c)

heat waves

d)

radio waves

13.

This refers to the distance between two successive crests and two successive troughs from the principal ray.

4 lines