Some inventores are:

Thomas Edison, Benjamin Franklin, Marconi, and Mr. Bell

Energy



In physics, energy is an indirectly observed quantity which comes in many forms, such as kinetic energy, potential energy, radiant energy, and many others; which are listed in this summary article. This is a major topic in science and technology and this article gives an overview of its major aspects, and provides links to the many specific articles about energy in its different forms and contexts.
The question "what is energy?" is difficult to answer in a simple, intuitive way, although energy can be rigorously defined in theoretical physics. In the words of Richard Feynman, "It is important to realize that in physics today, we have no knowledge what energy is. We do not have a picture that energy comes in little blobs of a definite amount."

However, it is clear that energy is always an indispensable prerequisite for performing mechanical work, and the concept has great importance in natural science. The natural basic units in which energy is measured are those used for mechanical work; they always are equivalent to a unit of force multiplied by a unit of length. Other equivalent units for energy are mass units multiplied by velocity units squared.

Gravity

Gravitation, or gravity, is the natural phenomenon by which physical bodies appear to attract each other with a force proportional to their masses. It is most commonly experienced as the agent that gives weight to objects with mass and causes them to fall to the ground when dropped. The phenomenon of gravitation itself, however, is a byproduct of a more fundamental phenomenon described by general relativity, which suggests that spacetime is curved according to the energy and momentum of whatever matter and radiation are present.

According to Newton's first law...

Newton's first law:

An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This law is often called
"the law of inertia".

Newton's second law:

Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

Newton's third law:

For every action there is an equal and opposite re-action.

The Food Chain

 

Every living thing needs energy in order to live. Everytime animals do something (run, jump) they use energy to do so.

Animals get energy from the food they eat, and all living things get energy from food. Plants use sunlight, water and nutrients to get energy (in a process called photosynthesis). Energy is necessary for living beings to grow.
A food chain shows how each living thing gets food, and how nutrients and energy are passed from creature to creature. Food chains begin with plant-life, and end with animal-life. Some animals eat plants, some animals eat other animals.

Animal and plant adaptations and behaviours

Adaptations help organisms survive in their ecological niche or habitat; adaptations can be anatomical, behavioural or physiological.

Anatomical adaptations are physical features such as an animals shape. Behavioural adaptations can be inherited or learnt and include tool use, language and swarming behaviour. Physiological adaptations include the ability to make venom; but also more general functions such as temperature regulation.

                                                                 Acids and Bases

Today we have a little surprise for you. If you enjoy things about acids and bases here is a little quiz for you to try! Enjoy being a MILLIONARE.



http://www.presentationhelpdesk.com/your-millionaire-game-2495.html 

                                              phisical and chemical changes

Chemical Changes Chemical changes take place on the molecular level. A chemical change produces a new substance. Examples of chemical changes include combustion (burning), cooking an egg, rusting of an iron pan, and mixing hydrochloric acid and sodium hydroxide to make salt and water.   Physical Changes Physical changes are concerned with energy and states of matter. A physical change does not produce a new substance. Changes in state or phase (melting, freezing, vaporization, condensation, sublimation) are physical changes. Examples of physical changes include crushing a can, melting an ice cube, and breaking a bottle.

                                What is Science                     Science is the concerted human effort to understand, or to understand better, the history of the natural world and how the natural world works, with observable physical evidence as the basis of that understanding¹. It is done through observation of natural phenomena, and/or through experimentation that tries to simulate natural processes under controlled conditions. (There are, of course, more definitions of science.)

                                                            Safety at at the lab
   

. Never work alone in the laboratory.  No student may work in the science classroom without the presence of the teacher. 4. When first entering a science room, do not touch any equipment, chemicals, or other materials in the laboratory area until you are instructed to do so. 5. Perform only those experiments authorized by your teacher.  Carefully follow all instructions, both written and oral.  Unauthorized experiments are not allowed. 6. Do not eat food, drink beverages, or chew gum in the laboratory.  Do not use laboratory glassware as containers for food or beverages.
		7. Be prepared for your work in the laboratory.  Read all procedures thoroughly before entering the laboratory.  Never fool around in the laboratory.  Horseplay, practical jokes, and pranks are dangerous and prohibited.  8. Always work in a well-ventilated area.  9. Observe good housekeeping practices.  Work areas should be kept clean and tidy at all times.  10. Be alert and proceed with caution at all times in the laboratory.  Notify the teacher immediately of any unsafe conditions you observe. 11. Dispose of all chemical waste properly.  Never mix chemicals in sink drains.  Sinks are to be used only for water. Check with your teacher for disposal of chemicals and solutions.  12. Labels and equipment instructions must be read carefully before use.  Set up and use the equipment as directed by your teacher. 13. Keep hands away from face, eyes, mouth, and body while using chemicals or lab equipment.  Wash your hands with soap and water after performing all experiments.  14. Experiments must be personally monitored at all times.  Do not wander around the room, distract other students, startle other students or interfere with the laboratory experiments of others. 15. Know the locations and operating procedures of all safety equipment including: first aid kit(s), and fire extinguisher.  Know where the fire alarm and the exits are located. 16. Know what to do if there is a fire drill during a laboratory period; containers must be closed, and any electrical equipment turned off.
		17. Any time chemicals, heat, or glassware are used, students will wear safety goggles. NO EXCEPTIONS TO THIS RULE! 18. Contact lenses may be not be worn in the laboratory. 19. Dress properly during a laboratory activity.  Long hair, dangling jewelry, and loose or baggy clothing are a hazard in the laboratory.  Long hair must be tied back, and dangling jewelry and baggy clothing must be secured.  Shoes must completely cover the foot.  No sandals allowed on lab days. 20. A lab coat or smock should be worn during laboratory experiments.

There are animal cells and plant cells and they are quite different. Here are some plant cells:




Palisade cell




root hair cell





guard cell




xylem and
phloem cell

                                                                       CELLS



You have meny cells in your body.
examples:
red blood cell, brain cell, sperm cell
bone cell etc.

This is the ph scale you use it to see

 if the liquid is an acid or a base.

6 to 1 is an acid, 8 to 14

is a base, 7 is neutral. 

                                                                            
                                                                Chemicals

You may think chemicals are boring but infact they are quite fun. Here are some types of chemicals

Corrosive                                              Expolsive