space exploration
What was the first satellite and who launched it?
- Sputnik I
- Russia
What were rockets first used for?
war
What is a galaxy
system of stars, solar systems, gas and dust
What is the name of a beginning star?
nebulae
what is the definition of a star
ball of hot gases, fueled by nuclear fission (splitting of atoms)
- for long periods of time in space
What country was first recorded for using rockets
China
What holds a galaxy together
gravity
describe a main sequence of a star
this is the majority of a star's life
What star seems to never move and is used as a navigational guide
north star
What are the four main portions/ countries of the ISS
-ESA (European)
- American
- Russia
- japan
What law causes rockets to launch?
Newton's Third law
- every action has an equal and opposite reaction
define a spiral galaxy
gas, dust and young stars
one bright center with arms revolving around
describe a supernova
a dramatic explosion of a star as it leaves it main sequence
the brighter the star the (closer/farther) the star is from the observer
closer
What are the four types of satellites?
- communication (tv, radio, telephone)
- weather (tracking weather patterns)
- national (GPS)
- scientific (discoveries)
Who is Robbert Goddard?
- the father of modern rocketry
- he launched the first modern rocket for US
define an elliptical galaxy
have bright centers, little gas and little dust
they appear flat
What two options does a star have, after it becomes a supernova?
neutron star (small dense star)
or
a black hole
What color is the hottest star, what color is the coolest
blue is the hottest
reddest is the coldest
What was the name of the first American astronaut that orbited the earth?
john glenn
Name three parts of a rocket
Payload: This is what the rocket is carrying. It could be a satellite, a spacecraft, or even scientific instruments.
Fuel Tanks: These hold the fuel and oxidizer needed for combustion.
Engines: These burn the fuel and oxidizer, creating hot gases that are expelled out the back.
Structure: This is the body of the rocket, providing support and holding everything together.
Nose Cone: The pointed front of the rocket, which reduces air resistance.
Fins: These help stabilize the rocket and keep it flying straight.
define an irregular galaxy
no apparent shape, very little mass and a lot of gas
What is a black hole?
- a star with such great gravity that not even light can escape
- very dense
What is a light year
how fast light travels in a vacuum
300,000 kilometers per second