Chemistry
Name the chemists that had the following theories:
Raisin Bun=
Billiard Ball Theory=
Planetary Model=
Raisin Bun=Thomson
Billiard Ball Theory=Dalton
Planetary Model=Rutherford
What is the difference between Terrestrial and Jovian Planets?
Terrestrial: consists of rocks and metal materials
Jovian: no solid surfaces; mostly made of gases
Why do astronauts weigh more on Earth than on the moon? What is this called?
The moon has less gravity resulting in an astronaut having less mass; Microgravity
A vast collection of stars held together by gravitational attraction is called a
A galaxy
Describe the difference between physical and chemical changes.
Chemical Change= an irreversible change; creates a new product that cannot be changed back
Physical Change= can be turned back into its original substance(s)
On the pH scale, acids have a ph _______i_______ than 7 and bases have a ph _______ii_______ than 7
i= lower
ii=greater
What planets are considered to be the Inner Planets
Mercury, Venus, Earth, Mars
What is our reference point for locating an object in space?
Earth
An unofficial group of stars known to people
Asterism
What is the difference between artificial and natural satellites?
Artificial: objects that are built and sent to space by people on Earth
Natural: refers to any small body that orbits a larger body such as a moon orbiting a planet.
Label the following using the solubility chart:
-sodium oxide
-potassium chlorate
-ammonium hydride
-sodium oxide (
-potassium chlorate (
-ammonium hydride (
What is Interferometry?
When multiple telescopes bring their images together for greater magnification(making the object larger) and resolution (bringing the image into focus and the ability to distinguish between two points)
What is a GPS used for? How many are orbiting Earth
It was designed to give people their location on Earth at any time.
24 are considered GPS satellites that are orbiting Earth.
What is triangulation? Why do we get more accurate information using triangulation?
Triangulation: three satellites capturing information for the same location on Earth.
Different views will allow for more accurate reading because all three satellites will transmit their data to the ground where we can better analyze it.
Draw a spacesuit with necessary features to survive in space.
Things to include:
-helmet
-spacesuit- with ventilation system
-boots
-gloves
-life support system (oxygen)
-in suit drink bag
-Urine collection
-battery
-harness- to be pulled back into the space station with
-communication device
Calculate the amount of mols there would 53.7g of lithium hydride.
Molar Mass= 7.951g/mol
Mol=m/M
mol= 6.75 mols
What is the Doppler Effect? Draw a diagram.
What is red shift and Blue shift?
Doppler effect: The pitch (tone) of a sound wave changes depending on whether the object is moving toward or away from the observer.
A star moving toward Earth will have its waves compressed (short light waves are blue).
-This is called a blue shift.
A star moving away will have its waves stretched (long light waves are red).
-This is called a red shift
Order the following from smallest diameter to largest diameter.
-Sun
-Solar System
-Milky Way
-Earth
Earth-Sun-Solar System- Milky Way
What is the difference between a reflecting and refracting telescope?
Refracting telescope
-uses two lenses to gather and focus light
-Con: the maximum lens size is about 1m
Reflecting telescope
-Uses curved mirrors to gather and focus light
-Pro: can be segmented instead of being one single piece - can reach lens of 10m
What are the essential features need in a "home in space"
1. clean water (electrolysis + recycling nearly 100%)
2. breathable air (removing CO2, microorganisms, dust and moisture)
3. suitable temperature and air pressure
4. a source of power
Create a Bohr-Rutherford Diagram for the following:
lithium fluoride
see google page
Use the following image to answer this question
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Spitaler
Create a chart that compares the geocentric and heliocentric models.
Geocentric: planets orbit Earth ; orbits are circular in shape
Heliocentric: planets orbit the sun ; orbits are elliptical in shape
Use the following picture to answer this question.
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Dimmer and Hotter
Hubble Space Telescope:
1. What type of telescope is it?
2. How long is its orbit?
3. What are some of the tasks it does?
1. reflecting telescope
2. 95 minutes- 24 hours a day
3. Time is spent observing and sending data
Turning the scope to focus on an object
Switching data transmission modes
Communication with the ground happens several times a day.