Submitted by DEATO, MARTIN (DEATOM0124) on 2/2/2011 12:23:17 AM
Points Awarded
Points Missed
Percentage
42.00
0.00
100%
1.
Earth holds the solar system record as the _____ planet.
A) warmest
B) coldest
C) driest
D) wettest
Points Possible: 1.0
2.
Earth is the _____ planet out from the Sun.
A) first
B) second
C) third
D) fourth
Points Possible: 1.0
3.
Earth is covered by about _____ water.
A) 25%
B) 70%
C) 45%
D) 87.5%
Points Possible: 1.0
4.
Most water on Earth exists as _____.
A) gas
B) vapor
C) liquid
D) solid [ice]
Points Possible: 1.0
5.
The observed record for a year's rainfall was _____ in _____.
A) 26.5 inches, Brazil
B) 26.5 feet, Bangladesh
C) 26.5 meters, India
D) 26.5 centimeters, New Caladonia
Points Possible: 1.0
6.
Ice _____ in liquid water.
A) freezes
B) floats
C) sinks
D) denatures
Points Possible: 1.0
7.
Water is _____ air.
A) less dense than
B) the same density as
C) much denser than
Points Possible: 1.0
8.
Organisms work ____ to support themselves in air than water.
A) about the same
B) much more
C) much less
Points Possible: 1.0
9.
Light penetrates about _____ in soils.
A) 2 mm
B) 2 inches
C) 20 cm
D) 1 meter
Points Possible: 1.0
10.
Enought light for photosynthesis penetrates about _____ in clear water.
A) 1000 kilometers
B) 100 meters
C) 100 feet
D) 10 feet
Points Possible: 1.0
11.
All life is basically _____ in origin.
A) terrestrial
B) extraterrestrial
C) marine
D) sedentary
Points Possible: 1.0
12.
The univese probably began _____.
A) in one explosive instant
B) over the course of 3-5 billion years
C) during 6-7,000 years
Points Possible: 1.0
13.
If the Universe started as a singularity, it would mean that _____ started out _____.
A) all mass and energy, spread out across the galaxy
B) a portion of mass and all energy, in a point
C) all mass but no energy, spread out across the galaxy
D) all mass and energy, in a point
Points Possible: 1.0
14.
At first the mass in the expanding Universe was _____ to form atoms.
A) too hot
B) too cold
C) just right
D) too dark
Points Possible: 1.0
15.
At first the Universe was _____ because free electrons _____ light.
A) transparent, gave off
B) transparent, absorbed
C) dark, gave off
D) dark, absorbed
Points Possible: 1.0
16.
The left over glow from the Big Bang of the Universe is represented by a background level of
_____ in the sky.
A) microwaves
B) gamma radiation
C) sunlight
D) nuclear fusion
Points Possible: 1.0
17.
_____ was the first astronomer to hypothesize that the Universe was _____.
A) Sagan, coalescing
B) Hubbell, coalescing
C) Sagan, expanding
D) Hubbell, expanding
Points Possible: 1.0
18.
Once the Universe and its matter began to cool, atoms could _____.
A) begin to form
B) begin to split
C) begin to emit photons
D) stop forming
Points Possible: 1.0
19.
The Universe has been expanding about _____.
A) 14 million years
B) 14 billion years
C) 1 million years
D) 1 billion years
Points Possible: 1.0
20.
Our solar system was formed by _____.
A) the collision of planets
B) coalescing of dust grains into larger and larger pieces
C) radiation from the Big Bang
D) microwave energy
Points Possible: 1.0
21.
Once the Sun was formed, it _____.
A) immediately gave of light and energy
B) collapsed into a black hole
C) took a while to heat up and give off light
D) spun off matter that became the planets
Points Possible: 1.0
22.
Rocky planets are found _____ the Sun than icy/gas planets.
A) farther from
B) closer to
Points Possible: 1.0
23.
Which was the least common gas in the Earth's early atmosphere?
A) carbon dioxide - CO2
B) oxygen - O2
C) nitrogen - N2
Points Possible: 1.0
24.
The Earth's atmosphere is now about _____% oxygen.
A) 21
B) 2.1
C) 0.21
Points Possible: 1.0
25.
Oxygen concentration in the Earth's atmosphere is the biproduct of _____.
A) volcanic activity
B) biological activity
C) comet strikes
D) basic inorgainc chemicstry
Points Possible: 1.0
26.
Photosynthesis is the process that combines _____, _____ and _____ to make _____.
A) water, organic carbon, CO2, energy
B) energy, water, CO2, organic carbon and oxygen
C) oxygen, organic carbon, water, CO2 and energy
Points Possible: 1.0
27.
Photosynthetic organisms appeared on Earth about _____ years ago.
A) 3.5 million
B) 3.5 billion
C) 3.5 thousand
D) 3.5 trillion
Points Possible: 1.0
28.
For living things, the Earth is at a "special" distance from the Sun because _____.
A) water is mostly liquid
B) UV radiation is absent
C) collisions with asteroids are infrequent
D) heavy elements have been gassed off
Points Possible: 1.0
29.
The most common element in the Universe is _____.
A) oxygen
B) nitrogen
C) uranium
D) hydrogen
Points Possible: 1.0
30.
Living things require some basic elemental building blocks to survive, they are _____.
A) carbon and hydrogen
B) carbon, hydrogen and oxygen
C) carbon, hydrogen, oxygen and nitrogen
D) carbon, hydrogen, oxygen, nitrogen and sodium
Points Possible: 1.0
31.
The most probably source[s] for water on the Earth was _____.
A) volcanic outgassing
B) icy comets
C) synthesis deep in hydrothemal vents
D) volcanic outgassing and icy comets
E) synthesis in hydrothermal vents and volcanic outgassing
Points Possible: 1.0
32.
Before there was significant oxygen in the Earth's atmosphere there was no _____ to reduce UV
radiation.
A) rainfall
B) water
C) photosynthesis
D) ozone
Points Possible: 1.0
33.
Ultraviolet radiation from the Sun can _____.
A) tear apart organic compounds
B) help organic synthesis
C) stimulate nutrient absorption
D) drive protein metabolism
Points Possible: 1.0
34.
The basic orgainc compounds for the beginings of life may have come from _____.
A) volcanic synthesis
B) lightning strikes through the atmosphere
C) other places in the solar system
D) possibly all of these
Points Possible: 1.0
35.
Life may have originated _____.
A) in ponds on land
B) in shallow ocean waters
C) in deep hydrothermal vents
D) possibly all of these
Points Possible: 1.0
36.
The commonly accepted scientific theory for the origin of the Universe is known as the:
A) inflation theory
B) genesis theory
C) the big bang theory
D) expansion theory
E) galactic theory
Points Possible: 1.0
37.
The presence of large amounts of water on Earth's surface __ global temperatures:
A) increases.
B) decreases.
C) moderates.
D) does not affect.
Points Possible: 1.0
38.
Wächtershäuser proposed the idea that life may have begun:
A) in warm tropical tide pools.
B) on the undersurface of sea ice.
C) between grains of pyrite silt and clay on beaches.
D) in deep sea hydrothermal vents.
Points Possible: 1.0
39.
Oceans average about ____ feet deep, land averages ____ feet in altitude.
A) 1200, 4000
B) 4000, 1200
C) 12000, 4000
D) 4000, 12000
Points Possible: 1.0
40.
If there was no moderating water on Earth, the mid-latitude summer daytime temperatures
would be _____ °F.
A) -70 to -80
B) 0 to 5
C) 60 to 75
D) 125 - 135
E) over 212
Points Possible: 1.0
41.
If there was no moderating water on Earth, the mid-latitude winter daytime temperatures would
be _____ °F.
A) -70 to -80
B) 0 to 5
C) 60 to 75
D) 125 - 135
E) over 212
Points Possible: 1.0
42.
Without the moderating effects of water, Earth would more closely resemble the planet _____.
A) Mercury
B) Venus
C) Saturn
D) Uranus
Points Possible: 1.0