Science and Technology
Category : 4th Class
Science and Technology
Today, we cannot expect our life without science and technology. Science and technology are extremely essential in our everyday life as they have made things more simple, fast and secured. Science and technologies are not only subjects. Rather, they means us ways and objects that help us live a better life!
Interesting Fact
MATTER
Matter is all around us. Matter is the air you are breathing. Matter is the computer you are reading from now. hotter is the stuff you touch and see.
Matter is defined as anything that has mass and takes up space. Matter is found in 3 major states; solid, liquid and gas. All matter is made of atoms. Atoms are the smallest particles of matter.
Interesting Fact
STATES OF MATTER
The three states of waiter are solids liquids and gases.
Solid are objects that keep their own shape and do not flow in a given temperature. Ice is a solid but when it melts it becomes a liquid. Other examples of solids are cars, books and clothes. Solids can be of different colours and textures, and they can be turned into different shapes. For example, clay. Solids are made up of molecules which group together and don't move around. Solids hold their shape at room temperature. The pencil that you left in the desk at school will still be the same shape when you return tomorrow.
SOLIDS
Solid are objects that keep their own shape but can take the shape of the container they are in and they can flow at a given temperature. Ice is a solid but when it melts it become a liquid. Other Examples of solids are cars, books and clothes.
Solids can be of different colours and textures, and they can be turned into different shapes. For example, clay. Solids are made up of molecules which group together and don?t move around.
Solids hold their shape at room temperature. The pencil that you left in the desk at school will still be the same shape when you return tomorrow.
LIQUIDS
Liquids do not have their own shape but can take the shape of the container they are in and they can flow the shape of the container they are in and they can flow at a given temperature Examples of liquids are tea. Water and blood.
They can be different and thickness. For example custard is a thicker liquid than tea and doesn?t flow as quickly as tea.
Do you know
GASES
Are often invisible and assume the shape and volume of their container. The air we breathe is made up of different gases.
Gases are air-like substances that can move around freely or flow to fit a container and they don't have their own shape. You can put your hand through gases and you won't feel them.
If they get out their container they can spread easily. We are surrounded by different gases in the air we breathe.
Do you know
SIMPLE MACHINE
The presence of machines make offices, factories, and homes more comfortable and help people to do their work easily .They also help with disabilities. New technology also help to make the work safer and more fun.
Lever
Lever a simple machine can be used to lift objects. It can be used to increase the force applied by us. For example long bar used to move a boulder.
Inclined plane
An inclined plane is a simple machine used to move objects to a higher place. For example, ladder, slide, etc.
Wheel and Axle
Interesting Facts
A wheel and axle is a simple machine. It makes work easier to do .Sewing machine, cycle, grinding machines have wheel and axle.
A pulley is a simple machine used to lift heavy loads. Pulley an effort can be applied in one direction and a load can be moved in another direction. For example, flagpole cloths line and curtain string have pulley.
Pulley
SCIENTIFIC INVENTIONS / DISCOVERIES
We live in the age of science and technology. The lives everyone is highly dependent on the scientific invention and modern-day technologies. Science and technology changed the lives of people to a great extent.
Science has made significant contributions in health by providing treatment for various chronic disease technology has benefited us in receiving those treatment through various ways and devices like X-ray. Machines, operation devices, pacemaker, etc.
Interesting Facts
Given below is the list of Scientists and their Inventions
1. |
Aeroplane |
Wright brothers |
2. |
Ball- Point Pen |
C. Biro |
3. |
Barometer |
E. Torricelli |
4. |
Bicycle |
K. Mac Millan |
5. |
Calculating Machine |
Pascal |
6. |
Diesel Engine |
Rudolf Diesel |
7. |
Dynamo |
Michael Faraday |
8. |
Electric Lamp |
Thomas Alva Edison |
9. |
Film (With sound) |
Dr. Lee do Forest |
10. |
Fountain Pen |
L.E. Waterman |
11. |
Jet Engine |
Sir Frank Whittle |
12. |
Life |
E.F. Otis |
13. |
Motor Car |
Karl Benz |
14. |
Steam Engine |
James Watt |
15. |
Telephone |
Alexander Graham Bell |
16. |
Television (Colour) |
John Legie Baird |
17. |
Gramophone |
Emile Berliner |
18. |
Dynamite |
Alfred Nobel |
19. |
Gravity |
Issac Newton |
20 |
Electric Battery |
Alexandro Volta |
21. |
Thermometer |
Galileo |
22. |
Bifocal Lens |
Benjamin Franklin |
23. |
Printing Machine |
John Guten Berg |
24. |
Helicopter |
Breguet |
25. |
X-Rays |
Roentgen |
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