1. A parachute is used for safety reasons in planes, helicopters, etc basically vehicles that fly. 2. Parachutes can be used as a pleasure or a way of having fun. For example: sky diving,parasailing,etc 3. military uses. The military use parachutes to drop equipment to the troops with out the use of a landing strip because of the lack of them. 4. a parachute was equipped on Apollo. when the Ares rocket booster was dropped, a parachute was deployed so that it would safely drop into an ocean.
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With a parachute you can jump out of a plain, you could save you self from dying after you jump out of a plain, you can drop little green men and watch them fall with there parachute, you could also make a parachute and discover the math math it take to hold weight and not break with pressue
The more you read the better. If you don't understand some of the words look them up. Good readers usually have a huge range of vocabulary. Skim or scan the text first as well.