Title: Mysterious Forces
Due Date: 1st of April 2015
Teacher: Mr.chimbizi
Topic: how does gravity and weightlessness affect humans?
Thesis: Is the gravitational force on earth that pulls us down towards the center of the earth harmful to human beings or beneficial? And the no force effect in space, which causes weightlessness beneficial or harmful?
Outline
I.
I) Discovery of gravity
II) Sir Isaac Newton
III) Gravity and weightlessness
II.
I) Define gravity
II) Positive effects on humans
III) Negative effects on humans
III.
I) Define weightlessness
II) Positive effects
III) Negative effects
IV.
I) Scientists research
II) How is the environment affected …show more content…
As this state withstands, you won't have back pain and aching feet. You can push yourself around freely by pushing a surface. When you are in movement, you will keep moving forever, as your speed remains persistent once you set yourself in motion. Astronauts grow about five centimeters in space. Through days in revolution, their spines resume to engross moisture from the blood stream. Without gravitational force to crush moisture out making astronauts spines longer therefor making them taller. Space uniforms are manufactured to accommodate the grown five centimeters. Zero gravity, which is also weightlessness can cause bone loss, which is one of the most severe consequences of zero gravity. The tension of Earth's gravity is what preserves bones to be tough. In any zero gravity location, bones experience slight stress. On the long term, the bones begin to weaken. With no gravity pulling blood in the lower parts of your body, fluids redistribute through your anatomy. The brain reads this as an excessive fluid level and triggers you to emit more fluids. This can simply cause dehydration. Space illness, is due to the immune system becoming destabilized in a weightless environments. Nearly half of astronauts complain of this syndrome's signs, which include sickness and headaches. Everything is floating so people have to take care of their movement. If astronauts are not cautious, they might knockout things not properly secured. Astronaut can inhale particles of food or water that float past them. “They use special electronic razors equipped with vacuums so that they don't inhale their own whiskers and choke”(Robert Paxton). When they return to Earth, astronauts undergo balance confusions. This is due to puzzlement in the inner ear, which we all know that it controls our balance. Astronauts undergo unsteadiness for days and cannot keep their balance. They gain the sense of