Revision iv c

Revision IV A

Light

Multiple Choice

Which object would be the best at reflecting light?

• Mirror

• Tree

• Book

• Ruler

Multiple Choice

We can see things around us because of light reflecting off the object and into our eyes?

• True

• False

Multiple Choice

Which source of light is natural?

• firworks
• lightbulb
• lightning
• headlights

Fill in the Blank

objects which have thier own light are called?

Multiple Choice

Where will the tree's shadow be?

• A

• B

• C

Multiple Choice

When the Sun is behind you, your shadow is ...

• behind you

• in front of you

• at the side of you

• not there

Multiple Choice

What does the moon do?

• produces light
• reflects the suns light
• produces heat

Multiple Choice

Shadows are shortest ...

• at night

• in the morning

• in the middle of the day

• in the evening

Multiple Select

A shadow is created when...

• an object blocks the light

• an object lets light pass thru

• an object is above light

Multiple Select

There are two factors that affect the size of shadow. What are the factors? Tick the correct answers.

• Size of the screen

• Distance of object from the screen

• Distance of object from the light source

• Size of the light source

Multiple Choice

This situation shows that

• light travels in a straight line

• light is everywhere

• light penetrates certain objects

• light is produces by the Sun

Multiple Choice

The bouncing of light off an object is ....

• a mirror
• absorption
• reflection
• refraction

Multiple Choice

Diagram shows the condition of a spoon in a glass of water.

What can be observed about the spoon?

• The spoon looks bent.

• The water is clearer.

• The water level rises.

Multiple Choice

Diagram shows a phenomenon occurs when the spotlight is directed onto a mirror surface. What is the principle of light shown in the situation?

• Light travels in a straight line

• Refraction of light

• Reflection of light

• Light travels in parallel

Multiple Choice

What is being blocked when a shadow is formed?

• Light Source
• Light Path
• Object
• Eye

Multiple Choice

Why does a straw look broken when you put it in a cup of water?

• It is being reflected.
• It is being refracted.
• It is broken.
• The colors are being separated.

Multiple Choice

What is the main source of light?

• Light bulbs
• Candles
• Sun
• Fluorescent lights

Multiple Choice

What is light?

• A form of energy
• A form of sound
• bright stuff
• A form of excitement

Multiple Choice

Which material is NOT translucent?

• Brick
• Tissue paper
• Thin sheet of plastic

Multiple Choice

Which way best describes how light moves?

• in circles
• slowly
• straight line
• faster through opaque objects

Multiple Choice

Allows most light through

• eflection
• Refraction
• Translucent
• Transparent

Multiple Choice

Allows little to no light through.

• Transparent

• Translucent

• Opal

• Opaque

Materials and solution

Multiple Select

SALT+ WATER can be separated bu using the method of-

• FILTRATION

• EVAPORATION

• SEDIMENTATION and DECANTATION

Multiple Select

MUD + WATER can be separated by using this method-

• EVAPORATION

• SEDIMENTATION AND DECANTATION

Multiple Select

Mustard oil is an example of -

• SOLID that is insoluble in water

• LIQUID that is immiscible in water

• GASES that is insoluble in water

Multiple Choice

OIL+WATER is an example of-

• MISCIBLE LIQUIDS

• IMMISCIBLE LIQUIDS

• INSOLUBLE SUBSTANCES

Fill in the Blank

We use _____________________ method in our homes to separate tea leaves from the tea.

Fill in the Blank

Substances that dissolve completely in a liquid are called _________________ substances .

Fill in the Blank

The substance that gets dissolved is called ___________ .

Fill in the Blank

The substance in which solute gets dissolved is called __________ .

Fill in the Blank

All matter is made up of tiny _____________ .

Fill in the Blank

The process by which liquids changes into solids on cooling is called ____________

Multiple Select

The process by which a liquid changes into a _____________ is called evaporation.

• solid

• gas

• liquid

Multiple Choice

Which is an example of a solute?

• Oil

• Sugar

• Water

• Milk

Multiple Choice

IN GAS , PARTICLES ARE FAR APART

• TRUE

• FALSE

Multiple Choice

IN SOLIDS PARTICLES ARE FAR APART

• TRUE

• FALSE

Fill in the Blank

The process by which a solid changes into a liquid on heating is called __________ .