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Science Test
Flash cards for science tes
114
Science
7th Grade
12/17/2010

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Cards

Term
what do scientists say contracted to form the solar system?????
Definition
Dust and Gas
Term
What do scientists say that caused the flatness of the dust and gas
Definition
Rotation
Term
Which Planets are considered the "inner planets"?
Definition
Mercury, Venus, Earth, Mars
Term
Which Planets are considered the "inner planets"?
Definition
Mercury, Venus, Earth, Mars
Term
In ferenheight degrees, how big is the temerature range among the planets?
Definition
1296 degrees F.
Term
What is so unusual about the orbit of Pluto compared to other planets?
Definition
Highly Eliptical
Term
what are the inner planets called?
Definition
terrestrial
Term
Why are they all considered earth-like?
Definition
they all metallic iron cores with rocky mantles and crusts
Term
what are the outer planets called
Definition
Giant planets
Term
what would cause you weight to be different on other planets?
Definition
Force of Gravity
Term
How do you calculate your weight on the other planets?
Definition
weight x force of gravity
Term
Why would you weigh less on Mercury
Definition
merury is smaller ( has less mass) so gravity is weaker
Term
what is mass the measure of
Definition
the amount of stuff something has.
Term
does your mass change from planet to planet?
Definition
no
Term
what pulls on your mass to produce weight?
Definition
gravity
Term
What is the equivalent energy in nuclear bombs going off every second to energy of what the sun produces every second
Definition
100 billion
Term
Ho wmuch of the mass of the soladr system does the sun contain
Definition
99.9%
Term
what are jupiter and saturn mostly made of
Definition
Hydrogen and Helium
Term
do they have metal and rock cores
Definition
yes
Term
what surrounds their cores
Definition
dense liquids
Term
How do Uranus and Neptune differ from Jupitar aND sATURN
Definition
Less Hydrogen and Helium, Larger zones of a variety of liquids
Term
What percentage of Jupitar and Saturn elements make up the rocks of thier cores
Definition
Less than 1%
Term
How are the inner planets compared to the outer giant planets in their makeup
Definition
Th inner planets are rocky not "gassy"
Term
what is density
Definition
mass divided by volume
Term
which planet has the lowest density
Definition
Saturn
Term
Which Planet has the most density
Definition
Earth
Term
How large is the earths magnetic core
Definition
makes up about 1/2 the radius
Term
why does the mantle increase in density as you go deeper
Definition
the stuff is squeezed under greater pressure
Term
how large is the core of Mercury compared to its radius
Definition
3/4
Term
Why is Mercury not as dense as earth if its the same size
Definition
The smaller size means less squeezing of stuff therefor less densr
Term
why is Venus not as dense as earth even though it is about the same size
Definition
Venus has a slightly smaller metallic core
Term
List 2 reasons why the density of Mars is the least of the inner planets
Definition
small metallic core, sulfur in core
Term
What is Pluto likely made of
Definition
1/2 ice 1/2 silicate
Term
Is the core of Jupiter very large compared to its total size
Definition
No (very small core compared to its size
Term
Why is Uranus not as dense as Neptune even though they are about the same size
Definition
Uranus contains less hydrogen and helium then Neptune
Term
Saturns density is 0.7 would it float or sink in water
Definition
float
Term
Name the Planets in order
Definition
Mercury, Venus, Earth, Mars, Jupitar, Saturn, Uranus, Neptune, Pluto
Term
What is rotation
Definition
The spin of a planet
Term
What is revolution
Definition
the orbit of a planet around the sun
Term
What is the name of the Spacecraft that first flew past Mercury
Definition
Mariner 10
Term
When did it reach Mercury
Definition
1974
Term
What 2 things make Mercury dificult to observe from earth
Definition
close to sun-solar glare, Dust in Earths atmosphere
Term
What does the surface look like on Mercury
Definition
cratered
Term
What probably caused the cliffs crisscrossing Mercury
Definition
cooling and shrinking of interior
Term
What is unique about the range from hot to cold on Mercury
Definition
Most dramatic range of any planet
Term
What is Mercurys crust likely made of
Definition
Silicate
Term
What is Silicate again
Definition
Non metallic rock
Term
Mercurys core makes up about how much of its diameter
Definition
75%
Term
What is the percentage of Mercurys core of the entire volume of the planet
Definition
40%
Term
Have we seen the entire surface of Mercury
Definition
NO
Term
What is the messanger mission
Definition
to see the entire surface of Mercury
Term
When was mESSENGER LAUNCHED AND WHEN WILL IT ARRIVE AT mERCURY
Definition
2004, 2011
Term
How many times will Messenger fly past Mercury before it goes into orbit
Definition
3
Term
How are Mercurys plains like that of the moon and how are they not like that of the moon
Definition
Like: Volcanic not like: not dark like moon maria
Term
What probaly made Mercurys weird terrain
Definition
A very large impact on opposite side of the planet
Term
What may be in the craters of Mercury at or near its poles
Definition
water ice
Term
Venus is earths____
Definition
twin
Term
What was the first planetary probe to visit Venus, when did this happen
Definition
Marner 2, 1962
Term
What is odd about the way Venus rotates
Definition
It has retrograde rotation
Term
What causes Venus to be so hot
Definition
Its atmosphere creates an extreme greenhouse effect (holds in heat from Sun)
Term
What is Maxwell Montes
Definition
A huge Mountain on Venus
Term
What is cleopatra
Definition
a huge impact crater on Venus
Term
What are most of the features of Venus named for
Definition
Women
Term
How does the speed of the winds on the surface differ from the high altitudes wind speeds
Definition
Almost no wind at surface; very very strong wind at high altitudes
Term
What is the main component of the cloudy atmosphere of Venus
Definition
Carbon dioxide
Term
How does the atmospheric pressure on Venus compare to the Pressure on Earth
Definition
Venus about 1oo times greater pressure
Term
How long does it take Venus to rotate
Definition
8 months
Term
How do scientists see through the thick clouds of Mercury
Definition
They use radar
Term
Why are there no polar ice caps on Venus
Definition
Venus is to hot for ice
Term
Does Venus have many craters compared to Mercury why or why not
Definition
no craters get covered to volcanic activity
Term
what has resurfaced much of Venus
Definition
Lava
Term
what is graben
Definition
A large fault valley caused by the stretcing of rocks causing some to sink
Term
Why do things look orange on the surface of Venus
Definition
The atmosphere filters out blue and yellow light.
Term
Do we as Christians need to worry about getting to other planets for our species to live
Definition
No the Bible is quite clear about our future
Term
What kind of twin is Venus is to earth
Definition
evil
Term
What may have reversed the planet Venuses rotation
Definition
A large impact from a very large meteorite or astroid
Term
Where was the greenhouse effect discovered
Definition
Venus
Term
Does Venus have about the same more or less volcanoes compared to earth
Definition
more
Term
How much of Venus atmoshere is made of carbon dioxide
Definition
95%
Term
Does lighining on Venus strike the ground
Definition
NO
Term
List 2 reasons why Venus is so bright in the night sky
Definition
close to earth, very reflective
Term
What are the Venus clouds mostly made of
Definition
Sulfuric acid
Term
What is the most common type of lava rock in the inner solar system
Definition
Basalt
Term
What color would everythong on the surface of Venus be accented with
Definition
orange
Term
Is maxwell mons higher than Mt. Everest
Definition
Yes
Term
Tell about Mercurys color
Definition
Nearly coloress
Term
When can you see Mercury from Earth
Definition
at twilight hours before sunup and after sundown
Term
Does Mercury have much Gravity
Definition
no
Term
What is the sky color on Mercury
Definition
Black
Term
what guards earth from most impacts
Definition
atmosphere
Term
Which planet in the solar system is most cratered
Definition
Mercury
Term
What did the very large meteorite form on the opposite side of the planet Mercury after impact at the Caloris Basin
Definition
the weird terrain
Term
If the earth got hit with such a large meteorite in Arizona, where would the weird terrain be formed
Definition
In the bottom of the Indian ocean off the coast of Madagascar
Term
What would a volcanic eruption sound like on Mercury
Definition
Nothing because there is like no atmosphere therefore sound waves cant travel
Term
How much of Mercury has been photographed
Definition
1/2
Term
the developer of the first modern rockets
Definition
Germans
Term
thought to be the first people to use rockets
Definition
Chinese
Term
Launched first satellites, launched sputnik satellites, Launched the 1st lunar probe, Launched the first person into orbit around the earth, Launched the first space stations
Definition
Russians
Term
Launched explorer satellites
Definition
Americans
Term
Unmanned spacecraft
Definition
Probes
Term
Probes that investigate the moon
Definition
Lunar Probes
Term
Probes that investigate other planets
Definition
planetary probes
Term
Blows out one end of a rocket to propel the rocket
Definition
gases
Term
Hot gases caused by burning this
Definition
Fuel
Term
First space program of the united states
Definition
Mercury
Term
Number of people on Geminin spacecraft
Definition
2
Term
Space program that brought us to the moon
Definition
Appollo
Term
Animals used in the early Soviet space flights
Definition
Dogs
Term
Number of astrounaughts in the Apollo Spacecrafts
Definition
3
Term
the last soviet space station
Definition
Mir
Term
Lost spacecraft and crew due to malfunction
Definition
Columbia
Term
The current space station
Definition
International space station
Term
Space shuttle purpose
Definition
H
Term
Year we first landed on the moon
Definition
r
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