Q: What property is a measure of the average kinetic energy of molecules? Read this paragraph and choose the correct option from the provided answers: Temperature is a measure of the average kinetic energy of molecules. Consider a mixture of hydrogen and oxygen gas at a certain temperature. Use the formula for kinetic energy to explain why the hydrogen molecules move faster than the oxygen molecules. Then explain why there's no hydrogen in the earth's atmosphere, and why the moon has no atmosphere at all. Choices: - mass - velocity - density - temperature A:
temperature

Q: The as yet undiscovered grand unified theory is a search to unify laws of what branch of science? Read this paragraph and choose the correct option from the provided answers: Over 2500 years ago Aristotle proposed two laws of physics governing motion. One for 'Earthly bodies' (objects on Earth) that states objects naturally go in straight lines and one for 'Heavenly bodies' (objects in space) that states objects naturally go in circles. This idea held steady for 2,000 years until Isaac Newton, in a triumph of brilliance, declared that there is one law of physics that governs motion and he unified "earthly" bodies and "heavenly" bodies with the The Universal Law of Gravitation. Newton used the universal law of gravity to prove that the moon is accelerating towards Earth just as a body on Earth is falling towards it. The acceleration of both the moon and the object on Earth is calculated using the same formula. This theory is so well regarded that it has been used to hypothesize the existence of black holes and dark matter, later verified by observation. The search to unify the laws of physics into one theory continues today and is often referred to as the yet undiscovered Grand Unified Theory (GUT). Choices: - genetics - chemistry - masses - physics A:
physics

Q: What type of aquifer is trapped between two impermeable rock layers? Read this paragraph and choose the correct option from the provided answers: Sometimes an aquifer is confined. A confined aquifer is trapped between two impermeable rock layers. Pressure from the rock layer on top forces the water out where the aquifer reaches the ground surface. Water that flows up to the surface naturally is an artesian spring . If people drill a well into a confined aquifer, the water may flow to the surface without assistance. This is an artesian well ( Figure below ). Choices: - abandoned - solid - segmented - confined A:
confined

Q: What forms in the ocean from the seafloor spreading? Read this paragraph and choose the correct option from the provided answers: In the oceans, plates move apart at mid-ocean ridges. Lava rises upward, erupts, and cools. Later, more lava erupts and pushes the original seafloor outward. This is seafloor spreading. Seafloor spreading forms new oceanic crust. The rising magma causes the ridge to be buoyant. This is why there is a mountain range running through the oceans. The plates pulling apart cause earthquakes. Choices: - underwater volcanoes - tsunamis - earthquakes - new oceanic crust A:
new oceanic crust