Midterm 1 85% with curve :(((
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The largest reservoir of freshwater on Earth is?
Ice caps and glaciers
If the 18O/16O ratio in the seawater was relatively larger, it indicates a _____ climate because the _____ isotope is likely to be trapped in glaciers
colder, lighter
An albedo effect refers to a phenomenon in which a _____ surface reflects more solar radiation, which mean an ______ has the highest albedo.
Bright (white), Ice
Which of the following processes played an important role in Antarctica becoming completely covered up by ice sheets? 1) separation of South America from Antarctica 2) Formation of a circular current that flowed around Antarctica 3) Glacier ice starting to form within Antarctica 4) Tropical heat not being able to reach Antarctica
All of the above
A wave that has a frequency of 10 Hz means what?
1 wave goes up and down 10 times every second
Within the visible light spectrum, which color has the lowest wavelength?
Blue
What country are you most likely to observe the shallowest inclination of the Earth’s magnetic field?
India
Electromagnetic waves move much like a wave formed by a crowd at a baseball game. This wave is know as a _______ wave and describes the kind of motion where particles of the wave move _____ to the motion of the wave itself.
transverse, perpendicular
The nature of an electromagnetic wave is that:
The electric field is perpendicular to the magnetic field and both are perpendicular to the direction of propagation
If the source of light is moving relative to a stationary observer (you) and the light looks blue-ish, what does it tell you about its motion?
It is moving toward you
What scientist correctly described the motion of the planets in our solar system?
Kepler
An object at rest is considered to exhibit which of the following types of motion?
Uniform motion
The currect level of the atmospheric CO2 is around _____ PPM.
460.67
The Earth acts as a system and it is composed of four components, which are:
hydrosphere, atmosphere, lithosphere, and biosphere
The saw-tooth pattern on the Keeling’s CO2 curve is caused by?
the changing of seasons
In the scientific method, the step after developing a theory is
predictions
The thermohaline circulation is driven by density differences in the seawater, which are controlled by _____ and _____ of the seawater.
temperature and salinity
The word electricity comes from a Greek word electro which means?
amber
According to Coulomb’s law, the magnitude of an electrical force is directly proportional to the _____ of the objects and inversely related to ______.
charge, distance
The two ways by which energy can be transferred are by?
particles and waves
When an electromagnet is turned on, an electrical current starts flowing and it will form a?
Magnetic field
An electromagnetic wave is generated whenever
a charged particle accelerates
In his experiment, Faraday showed that an ammeter not connected to a battery still detects an electrical current. This is because of a phenomenon known as?
electromagnetic induction
If you wanted to generate an electromagnetic wave whose wavelength is 1,000 km, you would have to swtin your electrically charged come ____ times every second.
300