Download Unit 5 Review Key - Grande Cache Community High School

Unit 5 Review
Science 9
Astrolabe
Ocular lens
Celestial bodies
Objective lens
Telescope
Doppler Effect
Radio Telescope
Payload
Artificial Satellite
GPS
Frame of
reference
Celestial bodies
Astrolabe
Heliocentric
Refracting telescope
Spectral Lines
Outer planets
Reflecting telescope
Red shift
Staged Rocket
Parallax
Low Earth orbit
Inner planets
GCCHS
Universal gravitation
Spectroscopy
Blue shift
Geocentric
Frame of reference
Triangulation
Gravitational Assist
Charged Coupled plates
Geosynchronous orbit
An axis that be use to describe something’s location. Altitude and
azimuth are examples.
Objects we see in the sky. Includes the sun, moon, planets, stars
constellations
This is a device that was used to measure the altitude of a reference
point in the sky. It was used for navigation.
Heliocentric
This is the sun centered model. It was originated by Copernicus
and supported by Galileo and Kepler.
Telescope
A device that uses lenses and mirrors to magnify visible light to
see objects far away.
Geocentric
This is the earth centered model. It was originated by Aristotle
and supported by the Church at the time.
Objective lens
The lens on a telescope that is closest to the object you are looking
at.
Ocular lens
The lens on a telescope that is closest to your eye.
Refracting
telescope
A telescope that uses lenses to magnify the object.
Reflecting
telescope
A telescope that uses mirrors to magnify the object.
Universal
gravitation
Proposed by Newton, it says that there is a force of attraction
between all masses in the universe.
Spectroscopy
This is the study of bright line and dark line spectra to determine
the composition of celestial objects.
Spectral Lines
These are the bright line and dark line spectra formed by
diffraction gratings or prisms.
Doppler Effect
This is the apparent shift in frequency (pitch) that occurs when the
source of the sound is moving toward or away from the observer.
Red Shift
When the object is moving away.
Blue Shift
When the object is toward the observer.
Triangulation
parallax
Radio telescope
This is a method used to find distance far away objects are using 2
different reference points. (aka parallax technique)
When something’s image is distorted due to the angle of
observation.
This is a telescope that uses radio waves instead of visible light to
obtain images of distant celestial objects. The receiver looks like a
big satellite dish.
payload
This is the object, people, explosives etc. that are the cargo in a
rocket.
Staged rocket
This is a rocket that is made of more than one section. The
sections with initial fuel tanks and rocket engines drop off when
used up.
Gravitational
assist
This is also called the sling shot effect. It is when a space craft or
probe uses the gravity of a moon or planet to help propel on long
space journeys.
Compass
Artificial satellites
Low earth orbit
GPS
This is a device that was used to measure the azimuth of a
reference point in the sky.
The moon is a natural one. These are the ones we place in space
for communications, GPS and remote sensing.
These are satellites closer to Earth. They make more than one orbit
each day.
This is a device to help determine and record ad object’s location.
It must be in contact with 3 satellites to work.
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Inner planets
These are the planets closer to the sun. They include: Mercury,
Venus, Earth and Mars
outer planets
These are the planets farther from the sun. They include: Jupiter,
Saturn, Uranus, Neptune. (Pluto )
2. During a spacewalk, an astronaut must overcome many obstacles to survive. Explain
how they overcome each of the obstacles listed below:
Cold
Temperature


thermal lined Space suit, gloves
lined and sealed helmet
Need for
Oxygen


air tanks on back (breathing apparatus)
sealed suit and helmet
Build Up of
CO2

CO2 filter in breathing apparatus

Tinted and polarized visor on helmet


Tether line
Compressed air devices
Exposure of
Eyes to
Damaging
UV
(Ultraviolet)
Radiation
Getting Back
to the
Spacecraft
3. How long does it take:
The earth to rotate around
once on its axis?
The moon to orbit the earth?
The earth to orbit the sun?
A satellite in geosynchronous
orbit to orbit the earth?
One day
About a month (27 days, 7 hours, 43 minutes, 11.6
seconds)
About a year (365 days, 5 hours, 49 minutes and
1.20 seconds )
One day
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4. When using triangulation (aka parallax technique) what is a way to increase accuracy
when estimation an object’ distance?
A larger baseline ….
5. Two astronauts in the international space station decide to do an experiment involving
the boiling of water in a low gravitational orbit. For safety the used a pot with a
fastened lid. The apply heat to the pot, and check the temperature every 30 seconds.
They repeat the experiment several times, making sure that they use the same amount
of water and the same starting temperature. Complete the chart below:
Manipulated variable
Time – they decided to take measurements every 30
seconds.
Responding variable
Temperature – the temperature “responded” at the time
intervals that they decided upon.
Control variables
Volume of water used and starting temperature – these
were unchanged in repeated trials of the experiment.
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