FREE Standardized Achievement Science Test Question and Answer

Question 1

Which of the two scientific explanations for how craters are eliminated from Europa's surface is most accurate?

Accepted Answer

Scientist 1: Filled in by water
Scientist 2: Sublimation

Answer

This question refers to a scientific passage (not provided) detailing two scientists' explanations for crater elimination on Europa. Based on the correct answer, Scientist 1 posits that craters are filled in by water, suggesting a subsurface ocean. Scientist 2 attributes crater removal to sublimation, where ice directly turns into gas, indicating a process of atmospheric or surface erosion.

Question 2

Which of the following descriptions of Europa would be agreed upon by both scientists in light of the evidence provided?

Accepted Answer

Europa is completely covered by a layer of ice.

Answer

This question refers to a scientific passage (not provided) about Europa. The correct answer indicates that both scientists, despite their differing theories on crater removal, agree on the fundamental observation that Europa is completely covered by a layer of ice. This shared understanding forms the basis for their respective hypotheses about the moon's surface processes.

Question 3

Which of the following descriptions of Europa would be agreed upon by both scientists in light of the evidence provided?

Accepted Answer

is being shaped by the movement of ice.

Answer

This question refers to a scientific passage (not provided) about Europa. The correct answer indicates that both scientists agree Europa's surface is being actively shaped by the movement of ice. This implies that the icy crust is not static but rather dynamic, undergoing continuous modification through processes like water filling or sublimation, which alter its features over time.

Question 4

Which of the following descriptions of the meteorite craters on Europa best reflects the opinions of both scientists?

Accepted Answer

Meteorite craters, once formed, are then smoothed or removed by Europa's surface processes.

Answer

This question refers to a scientific passage (not provided) about Europa. Both scientists, despite proposing different mechanisms for crater removal (water filling or sublimation), concur that meteorite craters on Europa do not remain permanently preserved. Instead, they are actively smoothed, eroded, or entirely removed by ongoing surface processes on the icy moon, indicating a geologically active environment.

Question 5

Ice sublimates to water vapor and enters Europa's atmosphere, according to Scientist 2. Which of the following gases would one most likely anticipate to find in Europa's atmosphere as a result of this process, if ultraviolet light then split those water vapor molecules apart?

Accepted Answer

Oxygen

Answer

Water vapor (H₂O) is composed of hydrogen and oxygen atoms. When ultraviolet light splits these molecules, a process called photodissociation occurs, breaking the chemical bonds. This releases free hydrogen and oxygen atoms, which can then recombine to form H₂ and O₂. Therefore, oxygen (O₂) would be a primary gas anticipated in Europa's atmosphere from this process.

Achievement Test Practice Test

Achievement Test Practice Test

FREE Standardized Achievement Science Test Question and Answer