Question

Essay on rocket and satellite

Answer 1

Answer:

ok

Explanation:

essay on rocket:-A rocket may be a missile, spacecraft, aircraft or other vehicle which is pushed by a rocket engine. Some big rockets are launch vehicles and some are manned (e.g. Saturn V). Other rockets, for example missiles, are unmanned. ("Manned" means that a person is in it; "unmanned" means that the machine goes without a person.)

Most rockets can be launched from the ground because exhaust thrust from the engine is bigger than the weight of the vehicle on Earth. Some are used to bring satellites into orbit. Some rockets such as ion thrusters are too weak and heavy to lift themselves. They work after other rockets bring them to outer space.

The rocket was invented by the Chinese while using gunpowder.[1] The first rockets were shaped like arrows and were not very fast. Most rockets still work by fire. The fire makes hot exhaust gases that expand and shoot out the back. This makes the rocket go forward.

Most rockets still use solid fuel to make the fire. The biggest ones use liquid fuel because it makes a hotter fire so the rocket is more powerful. However, handling the liquid fuel safely is difficult and expensive. Some satellite launch vehicles use both.

essay on settelite:-A satellite is a moon, planet or machine that orbits a planet or star. For example, Earth is a satellite because it orbits the sun. Likewise, the moon is a satellite because it orbits Earth. Usually, the word "satellite" refers to a machine that is launched into space and moves around Earth or another body in space.

Earth and the moon are examples of natural satellites. Thousands of artificial, or man-made, satellites orbit Earth. Some take pictures of the planet that help meteorologists predict weather and track hurricanes. Some take pictures of other planets, the sun, black holes, dark matter or faraway galaxies. These pictures help scientists better understand the solar system and universe.

Still other satellites are used mainly for communications, such as beaming TV signals and phone calls around the world. A group of more than 20 satellites make up the Global Positioning System, or GPS. If you have a GPS receiver, these satellites can help figure out your exact location.