Welcome Space Travelers!
THIS WEEK: Again we continue our work on pre-algebra, we will be moving from the Hands On Equations.. To more book work... this will be more difficult but still just like the pawns and cubes! You can do it!
CALCULATOR !!! YOU really want to make sure you purchase a calculator that can do fractions, it needs to have an ABC button on it! Trust me you’re going to want a fraction calculator!!
It is true that gravity decreases with distance, so it is possible to be far away from a planet or star and feel less gravity. But that doesn't account for the weightless feeling that astronauts experience in space. The reason that astronauts feel weightless actually has to do with their position compared to their spaceship. We feel weight on Earth because gravity is pulling us down, while the floor or ground stop us from falling. We are pressed against it. Any ship in orbit around the Earth is falling slowly to Earth. Since the ship and the astronauts are falling at the same speed, the astronauts don't press against anything, so they feel weightless.
You can feel something very like what the astronauts feel for a moment in a fast-moving elevator going down or in a roller coaster, when you start going down a big hill. You are going down rapidly, but so is the roller coaster or the elevator so for a second you feel weightless.
Our everyday lives involve such activities as sitting, walking, picking up things from the ground and lying in bed. None of these activities are possible in orbit.
Once a spacecraft reaches orbit, everything inside it appears to be weightless. Anything (or anyone) that is not tied down will float.
Astronauts first feel the effect of weightlessness when the rocket engines are turned off. Straight away, they begin to float, held down only by seatbelts. Weightlessness allows astronauts to appear superstrong. They can lift objects that would be far too heavy to move on Earth. But there are some drawbacks.
Without the effect of gravity, blood and other body fluids begin to flow towards the head. This can cause a feeling of stuffiness and headaches. With no gravity to push against, bones and muscles can become weak. To stay fit, they have to exercise several hours each day. This allows them to recover more quickly when they return to Earth.
In a shuttle or space station, there is no up or down. There is no difference between a floor and a ceiling. This can make astronauts feel sick until they get used to this strange arrangement.
BLOG QUESTIONS: SEE SPACE FACT FOR INFO!!
1) What have you seen today that is a result of gravity?
2) Take two objects - one large and one small. You will also need a stop watch or a watch with a second hand. Drop the large object first and time how long it takes to reach the ground, then do the same thing with the smaller object. What was the time for both objects? Which object reached the ground sooner and what was the difference in time?
3) Why does a balloon filled with helium float away into space and you don’t?
GONZAGA MENS BASKETBALL
Here is a recap from the game click on GO ZAGS
3/15/12 Gonzaga vs. West Virgina W 77 - 54
3/17/12 Gonzaga vs. Ohio State
As always, you are amazing, incredible people with the whole world waiting to be changed by YOU!
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