It is one of the sources of heat and works only when an electric current flows through a closed or complete circuit.

It is our natural and important source of energy. It produces heat by nuclear reaction. It this will die, the earth will become cold and lifeless.

These are materials that allow electricity to flow and pass through.

These are materials that do not allow electricity to pass through them.

What are the 3 parts of the Earth? Select all that apply.

These are big land areas of earth's surface and are surrounded by water.

It is the blanket of air that surrounds the earth and is made up of mixture of gases.

These are non living things that come from Earth, like oil, coal, metals, gemstones, stones, and sand.

This is the gas that we people and animals breathe in.

It is the gas that plants use in making their food.

It is the process where plants make their own food using carbon dioxide, water, sunlight and nutrients from the soil.

These are resources that can be replaced when used.

What are the examples of renewable resources? Select all that apply.

It is one way of conserving non renewable resources in which materials are being used again.

These are large, tall, rocky areas of land that comes up out of Earth's surface. Aside from providing trees and vegetation, it also serves as protection from harsh weather conditions.

These are areas that receives very littel or no rain all through out the year and has dry air and a lot of wind.

It is the process wherein soil is brought down from highlands by agents like water and wind.

It is a place where a decayed organic substances from discarded vegetables and fruits are mixed with soil

It is an instrument that records temperature; to know how cold or warm the weather is:

What do you call the light and gentle blowing of wind

At daytime, the land is warmer than the sea. The air over the land ares get heated first. Warm air rises. As it rises, the cold air from the sea replaces the warm air. Cold air blows from the sea to the land. What kind of breeze is this?

It is the instrument that detects the direction of the wind?

It the instrument used to measure the speed of the wind during a typhoon:

It is the amount of water vapor in the air at any given time:

It is the instrument used to measure the amount of water vapor in the air.

It is the process where a liquid changes into a vapor?

It is the process where water vapor changes back into liquid.

It is a collection of droplets of water floating in the air.

It is the instrument used to measure the amount of rainfall.

It is the type of clouds that are thin, curly and feathery.

It is the type of clouds that are spread our in the sky.

What are the common illnesses during summer: select all that apply

How many days does Earth takes to complete one revolution?

it is the earth's movement that will take only 24 hrs to complete and results day and night?