The Water Cycle

The Water Cycle


The Water Cycle is the journey water takes as it circles from the land to the sky and back again. The sun's heat provides energy to evaporate water from the Earth's surface (oceans, lakes, etc). Plants also lose water to the air. This process is called transpiration. The water vapour eventually condenses, forming tiny droplets in clouds.

When the clouds meet cool air over land, a process called precipitation occurs, and water returns to the land (or sea). Some precipitation soaks into the ground. Some of the underground water is trapped between rock or clay layers. This is called ground water. Most of the water flows down hill as run off, which eventually returns to the sea.

Evaluation 1.

A. Complete this short quiz.
B

The eye

The eye Revision Lesson


Parts of the eye

Can you name the parts?

Use the blank diagram above to describe what happens from light enters the eye .

Now watch this video clip to see how right you were.

How the eye works or do you prefer this one?

How about this short quiz.

1. Into how many sections is the eye divided in?

2. What is the innermost layer called?

THE EYE

The Eye

The eyes are the organs of sight. They are two in number. Each eye is shaped like a ping pong ball. The eye consists of three layers. The innermost layer is called the retina. The diagram below shows the different parts of the eye.

Read more more information about the eye.

The parts of the eye.

Every part of the eye has a function. Each part works together to enable sight.

HOW THE EYE WORKS

Assessment

(A) Complete this short quiz.
.
(B) Use the words from the word bank to correctly label the eye.

(C) Try this experiment. What did you find out? What conclusion can you draw?

JOINTS

Joints are the points at which bones meet.


Examples of joints

hinge, pivot, gliding, ball and socket

Importance of joints in movement

THE SKELETON

THE SKELETON

The skeleton is the bony framework of the body. It consists of approximately 206 bones.

Diagram of the skeleton

The skeleton has a number of functions.

1. It enables movement or locomotion.
2. It provides support for the body
3. It protects vital organs of the body. For example, the ribcage protects the heart, etc.

Watch the video clip for more information on the skeleton.

Assessment

(A) Read this information and make your notes.

(B) Complete this quiz.

(C) Label the skeleton correctly.

Have fun looking !!!!

The Reproductive System

Reproduction is the ability to reproduce.

Male Reproductive Organ

a sperm

Female Reproductive Organ

ovary

Assessment 1
1. Use mouse to label the parts of the reproductive system in humans

Landforms and Water Bodies

The part of the earth which we know a lot about is called the crust.
The earth is made up of about 71% water and 29% land. The percentage water include oceans (which are the largest sheets of water, and surround the continents), seas, rivers, lakes and ponds. The 29% land include continents and landforms.

The Continents

These are seven in number, namely:

Asia
Europe
Antarctica
Australia
Africa
North America
South America

Assessment 1

1. Follow the given direction and correctly name the continents.

Landforms

Landforms include mountains, hills, valleys, plains and plateaus


WATER BODIES

The Oceans

The part of the earth that is not land is water. Water bodies include, the five oceans, namely:

Indian Ocean,
Pacific Ocean
Atlantic Ocean
Southern Ocean
Arctic Ocean

Other water bodies include, sea, rivers, lakes, ponds.