A _________ is a standard by which the position of the object is compared.

An object is in _______if it changes position relative to a reference point.

A bird is flying from the ground to a tree shows motion. How do you know that the bird is in motion? What is the reference point?

look at the picture. Can you tell what these reference points are in the picture?

It is a push and pulls that can cause it to move.

A force is a ___ or _____ can cause objects to move.

A _____ is a force that con move things away from you.

A _____ is a force that can move things closer to you.

Humans and animals can move objects around them.

_____ exerts force. It can cause an object to move.

How do you think windmills and pinwheels move?

Wind is also called a moving _____.

Sailboat moves when moving air pushes on its sail.

________ a material or object that produces a magnetic field.

A ______ pulls metallic objects such as iron nails, paper clips, pins, and other metals.

Objects that are not affected by the pull of magnets are called ______.

A magnet has two ends called ______.

It is the invisible force around a magnet.

The north pole of one magnet attracts the south pole of another magnet.

To attract means to pull an object towards you.

To repel means to push an object away from you.

A force pulls objects toward Earth.

You cannot see gravity. You can only see its effects. It pulls all objects towards the ground.

Water flows a faucet because it is pulled upward by gravity.

_______ is an electric charge between objects that are rubbed.

when you rub a plastic comb on your hair, it becomes charged and attracts the bits of paper. This is an example of ________.

Fruits from a tree fall to the ground is an example of ________.

You can find magnets of the following example except.

Look at the picture, what happened to the magnet?

It is a specialized shaped glass that can break white light into different colors.

It is the light of the sun which is made up of many different colors of light added together.

These are the seven colors of light.

________ is formed when a source of light is blocked.

How does light travel?

Sounds can be produced when an object vibrates then cause air particles to move and create sound waves.

What is produced when a sound wave is reflected?

This is where sound will travel the slowest because of its particles which are far apart.

It is the loudness or softness of sound.

How do objects make a low pitch sound?

sun

stars

candle

kerosene lamp

fire ball

fireflys

traffic light

NAME THE MOST IMPORTANT SOURCE OF LIGHT ON EARTH.

WHICH HAS THE NATURAL SOURCES OF LIGHT ?

A SHADOW IS FORMED WHEN AN ______________OBJECT COMES IN PATH OF LIGHT.

A TRANSLUCENT OBJECT STOPS THE LIGHT _____________.

A SHADOW IS ALWAYS ____________ IN COLOUR.

CLEAR WATER IS AN EXAMPLE OF _____________ OBJECT.

WHICH OF THESE IS NOT AN ARTIFICIAL SOURCE OF LIGHT ?

LIGHT TRAVELS IN A _________ LINE.

A CUPBOARD IS AN/A ___________OBJECT.

A CLEAR AND SHARP SHADOW IS FORMED

light makes everything...........

Electricity is a form of energy.

..........is the main source of light.

To conserve electricity we have to use fans instead of air conditioner.

Candles are.........sources of light.

stars are.........sources of light.

light travels in............lines.

You have to turn on lights on leaving.

Sun is a..........source of light.

Using energy saving bulbs don`t save electricity.

What is NOT a source of heat?

How do molecules move in a hot object?

Shay plugs in her computer. When she places it on her lap, she notices it is hot. What is the source of heat?

Which is the source of heat that is caused when objects rapidly rub against each other?

What tool do we use to measure temperature?

Two liquids combining to make the temperature rise is which type of heat source?

Tires rubbing on the street and making smoke comes from which source of heat?

Ice cream melting outside is an example of which type of heat source?

A light bulb feeling warm comes from which type of heat source?

Two liquids combing to make the temperature rise is an example of which type of heat source?

Heat moves from ____________ to _____________.