27348101
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Creado por Dana Balin
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Pregunta 1
Pregunta
A scientist observing the light given off by a star discovers that this star emits a kind of starlight never before observed by other scientists. Which of the following reactions would NOT be good science?
Respuesta
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He contacts other astronomers to help him observe and understand this unusual star.
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He extends his idea of what a star is to include this newly discovered object.
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He changes his observations to conform to what he has learned form text-books.
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He repeats his observations to be sure that he has not made some kind of error.
Pregunta 2
Pregunta
An observer listed the following properties of a mineral sample.
A) The object is a dark grey rectangular solid.
B) The object rusts when exposed to rain.
C) The object most likely was purchased from a science catalog.
D) The object is more dense than water.
Which of there statements in an inference?
Respuesta
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A
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B
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C
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D
Pregunta 3
Pregunta
What values would be needed to calculate the mass of a solid mineral sample?
Respuesta
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The sample's hardness and volume
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The sample's density and volume
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The sample's hardness and density
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The sample's color and hardness
Pregunta 4
Pregunta
A student did an experiment to find the density of the mineral pyrite. The student measured and calculated the density of eight samples of pure pyrite. What would a graph of the data look like?
Respuesta
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A
-
B
-
C
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D
Pregunta 5
Pregunta
Which of the following is most likely to be an inference?
Respuesta
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Earth's circumference is approximately 40,000 km
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Earth's center is composed mainly of iron
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Earth is shaped like a sphere
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Earth is the third planet from the Sun
Pregunta 6
Pregunta
Quartz is a mineral with a density of 2.63 g/cm^3. If a sample of quartz was dropped into the graduated cylinder shown below, where would the quartz sample come to rest?
Respuesta
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A
-
B
-
C
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D
Pregunta 7
Pregunta
A student estimated the mass of a mineral sample to be 50g. Measurement showed it was actually 40g. What was the student's percent deviation?
Respuesta
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20%
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25%
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50%
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100%
Pregunta 8
Pregunta
Which is the greatest distance?
Respuesta
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3 * 10^-8 km
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8 * 10 ^-3 km
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8 * 10^3 km
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3 * 10^8 km
Pregunta 9
Pregunta
Why do objects float higher in seawater than they do in fresh water?
Respuesta
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Seawater is less dense that freshwater.
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Seawater is more dense than freshwater.
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Seawater is more pure than freshwater.
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All freshwater is polluted.
Pregunta 10
Pregunta
When aluminum foil is formed into a loose ball, it can float on water. But when the ball of foil is pounded flat with a hammer, the foil sinks. Why?
Respuesta
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Aluminum is less dense than water
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The act of pounding with a hammer, increases the mass of the ball of foil
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The act of pounding with a hammer increases the volume of the ball of foil
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Air caught in the ball of foil makes the ball less dense than the water
Pregunta 11
Pregunta
What is the approximate volume of 75 grams of pyrite?
Respuesta
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15 cm^3
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50 cm^3
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72 cm^3
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150 cm^3
Pregunta 12
Respuesta
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0.2 g/cm^3
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0.5 g/cm^3
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2 g/cm^3
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5 g/cm^3
Pregunta 13
Pregunta
Lillian looked up into the sky and estimated the clouds to be 1 kilometer above the ground. But the measurements by weather scientists showed them to actually be 10 kilometers above the ground. What was Lillian's percent error?
Respuesta
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9%
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10%
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90%
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100%
Pregunta 14
Pregunta
Which of the following professionals would be least likely to need training in the Earth sciences for his or her occupation?
Respuesta
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a water rights lawyer
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a plastic surgeon
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a mining engineer
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an airplane pilot
Pregunta 15
Pregunta
According to the graph, which of the following caused the most weather-related fatalities in the United States from 1988 to 2005?
Respuesta
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floods
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lightning
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winter storms
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high winds
Pregunta 16
Pregunta
If government programs could eliminate all fatalities caused by extreme heat and winter storms, how would this most likely affect the number of weather deaths in the near future?
Respuesta
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Weather deaths would be unchanged.
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Weather deaths would almost be cut in half.
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Weather deaths would be cut by a little more than half
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Weather deaths would be cut by about 80%.
Pregunta 17
Pregunta
What was the general direction of movement of Hurricane Katrina from August 25 to August 28?
Respuesta
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North
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South
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East
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West
Pregunta 18
Pregunta
The map shows that Hurricane Katrina came ashore in the continental United States how many times?
Respuesta
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1
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2
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3
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4
Pregunta 19
Pregunta
According to this graphic, when are hurricanes most common in this region?
Respuesta
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Winter and Spring
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Spring and Summer
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Summer and Autumn
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Autumn and Winter
Pregunta 20
Pregunta
According to this graphic, which of the following conclusions is correct?
Respuesta
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Hurricane Katrina struck New Orleans before it had its fastest winds
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Hurricane Katrina struck New Orleans when it had the fastest winds
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Hurricane Katrina struck New Orleans after it had its fastest winds
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Hurricane Katrina struck New Orleans in September
Pregunta 21
Pregunta
What was the relationship between the air pressure in Hurricane Katrina and the speed of the hurricane winds?
Respuesta
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As the air pressure went down, the wind speed increased.
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As the air pressure went down, the wind speed decreased.
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The air pressure was not related to the wind speed.
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The air pressure remained constant from August 23 to August 30.
Pregunta 22
Pregunta
How did the strength of hurricane Katrina change from August 23 to August 30?
Respuesta
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The hurricane increased in wind speed for the whole period.
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The hurricane decreased in wind speed for the whole period.
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The hurricane became weaker over water and stronger over land.
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The hurricane became stronger over water and weaker over land.
Pregunta 23
Respuesta
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Because it is weightless, Earth has no mass.
-
.000 000 000 000 000 000 000 6 kg
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600,000,000,000,000,000,000,000 kg
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6,000,000,000,000,000,000,000,000 kg
Pregunta 24
Respuesta
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Earth has no mass
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Earth is the only planet in the solar system
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Scientists have been able to determine Earth's mass
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All objects that have mass, also have weight
Pregunta 25
Respuesta
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The moon orbits Earth at a constant distance.
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Earth orbits the sun at a constant distance.
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Earth does not move with respect to the sun and moon.
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Earth has been placed on a very sensitive mass scale.
Pregunta 26
Pregunta
A metric ton is 1000 kg. According to the passage above, what is Earth's mass in metric tons?
Respuesta
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6 * 10^21
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6 * 10^24
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1000 * 10^24
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6 * 10^27
Pregunta 27
Pregunta
Given that the density of Eris and Pluto are equal, Eris' size is [blank_start]larger[blank_end] than Pluto.
Respuesta
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larger
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smaller
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nor smaller or larger
Pregunta 28
Pregunta
A(n) [blank_start]astronomer[blank_end] most likely discovered Eris.
Respuesta
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astronomer
Pregunta 29
Pregunta
If the mass of Pluto is 1.3 * 10^22 kilograms, the mass of Eris is approximately [blank_start]1.651 * 10^22[blank_end] kilograms.
Respuesta
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1.651*10^22
Pregunta 30
Pregunta
Objects that have a density less than that of water will [blank_start]float[blank_end]. Objects that have a density greater than that of water will [blank_start]sink[blank_end]. Objects that have a density equal to that of water will [blank_start]be suspended[blank_end].
Respuesta
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be suspended
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sink
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float
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be suspended
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float
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sink
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be suspended
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float
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sink
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