What affects the motion of molecules?

What is the boiling point of water?

When water boils and reaches the 100 degrees Celsius boiling point, the temperature will stay there until all the water is boiled away. What continues to increase?

What happens to heat when clouds condense to rain?

When you boil water, what comes out of the container?

The process of changing liquid to gas at a constant temperature or just below its boiling point is called ____.

Even if liquid does not boil, it may still evaporate.

Sunlight, wind or both may help water evaporate without being noticed.

When water evaporates, it turns into water vapor or steam. This is an example of _______.

When you put some cold water in a drinking glass, droplets of water are formed outside the glass. This is an example of _______.

When water vapor in the air touches a cooler surface, it turns into liquid. The process of changing gas to liquid is called ________.

Ice water melts when heated. This is an example of _______.

The formation of dew is an example of _______.

Ice cream dripping from its container is an example of _______.

The process of changing solid to liquid is called _____.

When water is placed in a freezer, it becomes ice. This is an example of _______.

Oil and melted butter become hard when cooled. This is an example of _______.

When liquid turns to solid, the process is called ______.

____ is the process of changing matter from solid to gas without passing the liquid state.

Dry Ice, a solid material which is a frozen carbon dioxide, turning into gas is an example of _______.

The fog is a mixture of cold carbon dioxide gas and cold humid air created as dry ice sublimates.

Mothballs slowly disappear as they turn into gas and mix with the surrounding air. This is an example of ______.

Which require an increase in temperature of the material for phase change to occur?

Which require a decrease in temperature of the material for phase change to occur?

All liquids become solids at a very low temperature.

Liquids solidify only when they are placed in the freezer.

All liquids freeze at the same temperature.

Gelatin freezes at 10 degrees Celsius and water solidifies at 0 degrees Celsius.

When gas turns to solid the process is called ______.

Snow, frost and cirrus clouds are all examples of ________.

Select all the phase or physical changes:

Freezing helps store our food without spoiling.

Freezing is used to make ice cream and other frozen delicacies.

Metals, plastics and glasses are reshaped by melting.

Evaporation makes the laundry dry. It also dries up our sweat and wet hair.

Evaporation keeps water from all areas on Earth to move and turn water to vapor forming clouds in the sky.

Condensation produces dew on the grass in the morning.

Condensation causes the formation of rain clouds and the rain which the farmers need for their crops.

Evaporation causing dehydration and withering of plants lead to drought.

Plants dried up because of drought resulting to many people having no food to eat.

Condensation followed by precipitation can cause rain. Too much rain can cause flood.

Select all the negative human activities causing changes in temperature.

Select all the ways to help minimize negative effects of temperature changes in the community.

Select all the ways to help minimize negative effects of temperature changes in the community.

Heat is required for chemical change to occur.

Burning of wood, coal, gas and oil are _____.

Use of electricity and batteries, cooking, baking are all _____.

Check all the negative effects of chemical change.

Changes in temperature can cause bad weather like a very strong storm and wind.

The rising of temperature can result in the melting of caps in the polar regions that leads to rising of the sea level.

A change in appearance or physical properties of a substance is called ______.

Change in temperature, formation of bubble and change in color is ______.

What solid turns to gas at a certain temperature?

Reading inside a moving vehicle is one way of showing care for your eyes.

The hollow sphere divided into 2 cavities is called _____.

The cavity in the skull is called ____.

Most of your eyeball is hidden inside your head.

The eyeball is held in place by ____ that allows your eyes to rotate slightly up, down and sideways.

What protects the front of the eyeball?

What protect the eyes from sweat, dust and other foreign particles?

Select all that apply.

Anything that touches the eyelashes causes the lids to blink in a protective reflex action.

These keep the eyes moist for the eyelids to open and close easily.

What are the basic layers of the human eye?

The outer, white layer of the eye is called ____.

How many pairs of muscles that move the eye are attached to the sclera?

Light enters through the ____, the transparent part of the coat of the eyeball.

The middle layer of the eye that contains numerous blood vessels nourishing the eye is called ___.

What eye part contains melanin?

The pigment that gives color to the eye is called ___.

The small opening or the black hole at the center of the eye is called ___.

The opening of the eye that allows light to pass though or enter?

What makes the pupil smaller so that lesser amount of light enters the eye?

What makes the pupil wider so that more light passes the eye?

This is located behind the iris and it changes shape to focus on a near or far object.

Light that enters the pupil strike this eye part that gathers light.

When you look at near objects, the lens become ____.

When you look at far objects, the lens become ____.

The cavity between the cornea and the lens is filled with a transparent, watery fluid called ____.

The large cavity behind the lens is filled with colorless, jellylike liquid called ___.

The inner layer is a screen of light-sensitive cells called ___. This is where light is directed to.

What muscles are attached to the choroid layer that holds the lens in place?

What transfers visual signals from the retina (the rear of the eye) to the brain?

What are sensitive to weak light or low-light vision?

What are sensitive to color vision but require bright light to function?