MEAINING OF STATELLITE Satellite is a body that orbits or moves round a planet e.g. the moon is a satellite of the earth Thus, the satellites or moons of the planet in our solar system are shown below PLANET NO OF SATELLITE Mercury None Venus None Earth 1 Mass 2 Jupiter 12 Saturn 9 …
MEANING OF GRAVITATION Gravitation is a force that has effect on the stability of a body. If an object is tossed up the air, it will fall back to the ground because the earth exerts an attraction on it. This attraction is called gravitational attraction. The gravitational attraction / force between any two object …
MEANING OF SPACE TRAVEL The space outside the sun, earth, star is called outer space. Space travel is the travelling to the outer space beyond this earth. The space travellers are called astronaut. The earth is surrounded by a layer of air called atmosphere which can be divided into about 4 regions: Troposphere Stratosphere Lomosphere …
CALCULATION OF WORK DONE AGAINST GRAVITY Suppose you lift an object of mass 1kg from the ground to a height of 1m, the work done in lifting the abject is calculated by using the formula Mgh Mgh = 1 x 1 x 9.8 joules (g = 9.8m 152) joule is the unit of work. …
A force can be defined as any action that makes or tries to move, stop or alter the speed of a body in a given direction. TYPES OF FORCE There are two types of force namely: Contact force Non-contact CONTACT FORCE These are forces which sources are in contact with the body to which …
EFFECTS OF POLLUTION Environment Degradation Environment is the first casualty for increase in pollution weather in air or water. The increase in the amount of CO2 in the atmosphere leads to smog which can restrict sunlight from reaching the earth. Thus, preventing plants in the process of photosynthesis. Gases like Sulfur dioxide and nitrogen oxide …
Pollution occurs when pollutants contaminate the natural surroundings; which brings about changes that affect our normal lifestyles adversely. Pollution is the introduction of contaminants into the environment that cause harm or discomfort to humans or other living organisms, or that damage the environment which can come in the form of chemical substances, or energy such …
Energy is the amount of force or power when applied can move one object from one position to another or Energy defines the capacity of a system to do work. Energy exists in everybody whether they are human beings or animals or non living things for e.g.: Jet, Light, Machines etc. What are the …
Energy is the amount of force or power when applied can move one object from one position to another or Energy defines the capacity of a system to do work. Energy exists in everybody whether they are human beings or animals or non living things for e.g.: Jet, Light, Machines etc. SOURCES OF ENERGY …
HIV/AIDS COUNSELLING AND TESTING VCT stands for voluntary counseling and testing. VCT is when a person chooses to undergo HIV/AIDS counseling so that they can make an informed decision about whether to be tested for HIV. The government is encouraging all of us to come forward to be tested for HIV. it believes that if many …