Full Science Test Practice Quiz 1

The force that pulls objects to one another.

The force of power.

The fore that exerts pressure.

They start in a nebula a giant cloud of dust and gas.

The gases and dust begin to clump and heat up until they begin to perform nuclear fusion. (Called a protostar)

When the nuclear fusion has started, the star is known as a main sequence star and if its the size of the sun or less, it can live anywhere from 10 billion to trillions of years.

After the star has used up all the hydrogen and other fuels, it begins to swell into a red giant. If larger than the sun, they will become a red supergiant.

Outer layers of the star drift away, then the core shrinks to become a a small, hot, dense white dwarf stars.

White dwarf eventually cools and fades.

At first, the gas that was in the atmosphere was blown away by the solar winds. Then they began to clump and collide to form the Gas Giants.

Then, the heavy materials which are still close to the sun began to clump and collide to form the Terrestrial Planets.

The rest of the matter became asteroids, comets, and moons.

The Gas Giants were made because of the solar winds blowing all the gas outwards.

The solid material stayed near the sun to create the Terrestrial Planets.

The Red Shift

The Blue Spread

The Yellow Space

Longest

Shortest

4th Longest

Longest

Shortest

3rd Longest

It starts with all the matter in one small, extremely compact, hot (100 million degrees C) ball.

At some point, all this matter exploded, and begun to spread.

Then, after four minutes, the matter began to cool and form subatomic particles(neutrons, protons, electrons).

After about a billion years, some galaxies began to form.

Spacecraft usually fly 200 km or more above the Earth's surface, aircraft usually only fly above 20 km.

Aircraft engines require oxygen in the air, spacecraft engines do not.

A piloted spacecraft requires its own fuel and oxygen, while an aircraft only needs fuels.

Spacecraft must travel much, much faster.

Many stars that we have seen, seem to have planets about the same distance away from a star as our planets.

Hubble Space Telescope has detected other planetary systems being formed.

The first direct evidence of solid matter existing anywhere other than the sun was found in a large cloud of tiny particles in orbit around the star Vega.

They use oxygen to burn fuel.

They use oxygen to fly farther.

Lack of oxygen farther in the Earth's atmosphere.

Pilots are afraid of heights.

When the wings are curved, low pressure air is pushed to the top and high pressure air is on the bottom, keeping the aircraft aloft.

It helps it fly.

Gravity and Thrust

Pull and Push

There high- Earth orbit and low-Earth orbit spacecraft, as well as piloted and unpiloted. The advantages to a low- Earth orbit satellite is that it can remote sense/make observations from a distance, but it would be very difficult to use for TV communication due to the fact that the receivers would have to track the satellite as it moved across the sky.

High- Earth orbit satellites can be used for this type of communication, but would have a harder time seeing the natural disasters and occurrences.

Piloted spacecraft allow man to actually venture space, but can be dangerous and won't go as far.

Unpiloted spacecraft allow us to go farther and not worry about endangering human life or packing food and oxygen.

The ISS

Apollo

RADARSAT

Rocket Engines

Stuff