The higher the ratio of oxygen 18 to oxygen 16 in the shells of organisms that lived in the sea
during the geologic past, the colder the climate at that time.
a. true
b. false
a
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The greater the difference in temperature between the wet bulb and dry bulb on a sling psychrometer, the ________ the air is and the ________ the relative humidity
A) drier; higher B) drier; lower C) wetter; higher D) wetter; lower
Because sand-sized grains are heavier than silt or clay-sized grains, sand moves close to the ground in a series of short hops called saltation.
Answer the following statement true (T) or false (F)
Refraction results in changes in both ________ of light
A) speed and direction B) Rayleigh scattering and mie scattering C) color and reflection D) conduction and convection E) albedo and absorption
How did the Moon form?
A) The Moon formed due to the impact of a Mars-sized body with the Earth. B) The Moon was captured by the gravitational pull of the Earth. C) The Moon erupted from the Earth leaving a scar at the Pacific Ocean. D) The Moon formed at the same time as the Earth due to simultaneous accretion.