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Science 9 Midterm Review Flashcards | StudBud
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Science 9 Midterm Review
Science 9 Midterm Review
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1
What is the Sun?
A star
an asteroid
a comet
A planet
2
Which of the following is not a measurable element of weather?
Latitude
Air Pressure
Wind
Temperature
3
The hottest climates on earth are located near the equator because this region
receives maximum solar intensity
reflects the greatest amount of sunlight
receives the most hours of daylight
is usually closest to the sun
4
Red shift and the Doppler Effect help support which major line of evidence for the big bang theory?
Electromagnetic Spectrum
Newton's Law
Hubble's Law
Cosmic Background Radiation
5
Air pressure is produced by
the force of wind
the weight of air
the weight of water vapor
warm, moist air
6
How long does it take for the Earth to spin on its axis?
1 year
1 day
1 month
1 week
7
Which fact provides the best evidence that Earth's axis is tilted?
planetary winds are deflected to the right in the northern hemisphere
winter in southern hemisphere same time as summer in the north hemisphere
locations on earth equator received 12 hours of daylight every day
the apparent diameter of the sun shows predictable changes in size
8
The process of water turning from a liquid to a gas is known as
Condensation
Precipitation
Percolation
Evaporation
9
If air temperature decreases but the water vapor in the air stays constant, the relative humidity
increases
decreases
stays the same
10
Which process removes CO2 from the atmosphere?
precipitation
photosynthesis
combustion
greenhouse effect
11
The current temperature indicated by the cosmic microwave background radiation is:
3 Kelvin
270 Celsius
3 Fahrenheit
-270 Fahrenheit
12
The thin envelope of gases, tiny solid particles, and liquid droplets surrounding the solid planet is known as
Hydrosphere
Atmosphere
Clouds
Ozone
13
Which is NOT necessary for a planet to support life?
Ice
An abundance of Carbon
Liquid Water
An energy source
14
The state of the atmosphere at a particular time and place is known as
Climate
Weather
15
In an experiment, the variable that is intentionally changed or manipulated is called the:
Extraneous variable
Control variable
Dependent variable
Independent variable
16
The process by which certain gases warm the atmosphere by trapping infrared radiation that is emitted by Earth's surface
Solar Radiation
Greenhouse Effect
Climate Change
Coriolis Effect
17
How long does it take for the moon to orbit the Earth?
24 hours
29.5 days
365 days
7 days
18
Greenhouse gases
absorb terrestrial radiation
All of the above
absorb infrared radiation
include water vapor, carbon dioxide, and methane
19
What is the third planet from the sun?
Earth
Venus
Jupiter
Mars
20
The 5 variables of weather are:
wind, humidity, atmospheric pressure, temperature, and latitude
solar intensity, latitude, humidity, dew point, and heat
temperature, air pressure, humidity, precipitation, and wind
air pressure, temperature, dew point, humidity, and wind
21
The approximate age of Earth is:
4.5 million years
13.8 million years
13.8 billion years
4.5 billion years
22
Which atmospheric layer contains the greatest concentration of ozone?
Mesosphere
Stratosphere
Thermosphere
Troposphere
23
Earth's lower atmosphere is kept warm by
ultraviolet radiation
terrestrial radiation
solar radiation
shortwave radiation
24
Red shift explains how waves are getting:
shorter
taller
faster
longer
25
What are the Jovian planets?
mars, venus, jupiter, Earth
Mercury, Venus, Earth, Mars
Jupiter, Saturn, Uranus, Neptune
Uranus, Saturn, Jupiter, Earth
26
How much of the observed helium in universe could have originated in stars?
not more than 25%
75%
25%
not more than 10%
27
What is the most accepted theory of how the moon formed?
Collision theory- a small planet creashed into Earth
Co-Accretian Theory- Earth and moon formed while orbiting a black hole
Capture theory- Moon moving through space and got caught in Earth's gravity
Fission Theory- Earth was spinning so fast that the moon separated
28
Which of the following is not a greenhouse gas?
Mercury
Water Vapor
Carbon Dioxide
Methane
29
The atmosphere circulates because
air pressure is constantly changing
greenhouse gases absorb energy
Earth is not evenly heated due to variation of the angle of the sun's rays
the Coriolis effect makes air molecules appear to curve
30
The equation v = H x d is known as:
Hubble's Law
Webb's Law
Kelvin's Law
Newton's Law
31
As altitude increases, atmospheric pressure
stays the same
increases
decreases
32
The tilt of Earth's axis is how many degrees?
13.5
33.5
45
23.5
33
What distinguishes a scientific law from a scientific theory?
Theories are speculative, while laws are based on rigorous experimentation.
Laws are proven facts, while theories are educated guesses.
Theories are specific to biology, while laws apply to physics.
Laws describe natural phenomena, while theories explain them.
34
The ratio of the water vapor actually in the air to the maximum water vapor the air can hold at that temperature
Dew Point
Specific Humidity
Relative Humidity
Absolute Humidity
35
The main source of energy for the water cycle is
the sun
gravity
the moon
wind
36
What is a hypothesis in scientific research?
An untested assumption
A proven fact
An educated guess to explain an observation
A theory supported by extensive evidence
37
Which of the following is not one of the 3 major lines of evidence for the big bang theory?
cosmic background radiation
the observed proportion of elements
doppler effect
the current expansion of space
38
The temperature at which the air becomes saturated
Dew Point
Humidity
Precipitation
Condensation
39
Penzias and Wilson detected waves with a length of 7.35 cm, What type of waves are these on the EM Spectrum?
gamma waves
ultrav violet waves
microwaves
radio waves
40
What are the terrestrial planets?
Mercury, Venus, Earth, Mars
Uranus, Saturn, Jupiter, Earth
Jupiter, Saturn, Uranus, Neptune
mars, venus, jupiter, Earth
