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Question 1 (1 point) What elements are the atmospheres of Jupiter and Saturn primarily composed of? Question 1 options: Argon and krypton Hydrogen and helium* Nitrogen and carbon dioxide Nitrogen and carbon dioxide Nitrogen and methane Nitrogen and oxygen*

.Hydrogen and helium

_____ is the idea that a spinning cloud of dust flattened into a disk, known as the protoplanetary disk, and created a star with orbiting planets in a solar system. Question 7 options: Solar theory* Big bang theory* Nebular hypothesis solar system expansion hypothesis*

.Nebular hypothesis

uestion 18 (1 point) Which of the following best fits the following description: primitive organisms made of single cells that lack cell nuclei and other organelles. Question 18 options: Prokaryotes* Eukaryotes* Protolifoids Laurentians Cynaoformates

.Prokaryotes

What is the Doppler effect? Question 17 options: a change in the luminosity of light as the source moves relative to the observer* a change in the speed of light as the source moves relative to the observer* a change in the frequency of light as the source moves relative to the observer* a change in phase between gas and solid

.a change in the frequency of light as the source moves relative to the observer

Question 14 (1 point) What tectonic process happened toward the end of the Proterozoic, which may have helped evolutionary advancements right after the time period? Question 14 options: formation of Rodinia breakup of Rodinia* arid conditions across Rodinia mountain building within Rodinia

.breakup of Rodinia

Saved Why was Pluto demoted from planet to dwarf planet? Question 5 options: it does not have a moon* It does not have a gravitational field* It did not clear its orbital path of other objects* it is not round enough

.did not clear its orbital path of other objects

Which of the following processes did NOT contribute to the heat that made the earth molten at the beginning of its creation? Question 9 options: radioactive decay imacts gravity gravitational influence of Jupiter*

.gravitational influence of Jupiter

Question 6 (1 point) Why are rocky inner planets different than gas and ice giants found in the outer solar system? Question 6 options: gasses have more momentum and fly father from the star heat from the growing star only allows high melting point minerals (like rocks) to form near the star* solar wind pushes material away from the star has more effect on metals The rocky inner planets got rocks from the sun later in planet formation

.heat from the growing star only allows high melting point minerals (like rocks) to form near the star

Question 16 (1 point) Which of the following tectonic settings was NOT present in North America during the Paleozoic? Question 16 options: subduction zone* mid-ocean ridge* collision passive margin

.mid-ocean ridge

.In comparison with other parts of earth's crust, cratons are known for their ______. Question 12 options: thinness young age high density* old age*

.old age

What marks the beginning of the Proterozoic? Question 13 options: the evolution of fish formation of Rodinia oxygenation of the planet* break up of Rodinia

.oxygenation of the planet

Question 15 (1 point) The majority of the oxygen associated with the Great Oxygenation Event came from ______. Question 15 options: metorite impacts* photosyntheic bacteria* increased respiration from animals evaporation of water*

.photosyntheic bacteria

Question 3 (1 point) What process creates carbon and iron? Question 3 options: black holes the big bang* supenovas* star fusion*

.star fusion

What process creates large elements like gold and uranium? Question 4 options: supernovas* star fusion* black holes the big bang*

.supernovas

What process created hydrogen? Question 2 options: supernovas the big bang* star fusion black holes

.the big bang

Which of the following locations provides the most evidence for the late heavy bombardment? Question 11 options: the moon* cratons* ocean floors* volcanic belts

.the moon

Question 8 (1 point) Which of the following is NOT a piece of evidence that supports the giant impact formation hypothesis for the origin of the moon? Question 8 options: the earth has a higher density than the moon* the earth and moon have similar chemical compositions* the number of craters on the moon the earth and moon are in tidal lock*

.the number of craters on the moon

Question 10 (1 point) Which of the following is NOT considered a possible source of water on earth? Question 10 options: comets the sun* meteorites volcanism

.the sun


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