What is SpeedWhen we say a body moves fast (or slow) we refer to its speed. The speed of an object is defined as the distance travelled by it in unit time. .The SI unit of speed is metre per second (m/s). Therefore, an object that moves faster covers more distance in a second (unit time) as compared to an object that moves slower.Different Units of … [Read more...] about What is Speed and How to Calculate Speed
Physics
How many Objects are there in Our Solar System
How many Objects are there in Our Solar System Solar System The sun and everything that revolves around it form the solar system. The planets and their moons, comets, asteroids, and other space objects orbit the sun. All these objects are held together in the solar system because of the sun’s gravitational pull. It is believed that the sun, the Earth, and the other planets of … [Read more...] about How many Objects are there in Our Solar System
How did the Star Constellations Get their Names
How did the Star Constellations Get their Names Constellations Many a times certain groups of stars seem to form a recognizable pattern in the night sky. These are called constellations. These were named by the ancient people after animals and mythological characters. There are as many as 88 constellations. You can easily identify some constellations even with the naked eye. … [Read more...] about How did the Star Constellations Get their Names
Where are the Stars Found
Where are the Stars Found Stars Stars are luminous bodies (i.e., bodies that give light) regularly seen as points of light in the night sky. Our sun is a star too. Many of the stars that we see are much bigger than the sun. Since they are very far away from us, the light reaching us from them is very faint. This faint light appears to twinkle due to atmospheric … [Read more...] about Where are the Stars Found
How can We Protect Ourselves from an Earthquake
How can We Protect Ourselves from an Earthquake Protection Against Earthquakes It is not in our power to prevent an earthquake. We can, however, take precautions to minimize the damage caused by it.Since most damage to human life is caused by falling of buildings, we should work towards making them earthquake resistant. The first factor to be considered is the type of … [Read more...] about How can We Protect Ourselves from an Earthquake