the subject is Geologic time. I was wondering if someone could check my answers please
Sand or gravel that naturally forms near Earth's surface is known as
A. pollen.
B. ore.
C. aggregate.
(D. bedrock.)
When new clay sediment is deposited on top of old beach material, it's known as
A. regression.
(B. transgression.)
C. progression.
D. aggression.
1 is wrong. I don't know about 2.
Bot your answers are wrong. Bedrock is the rock layer upon which soil (including sand and gravel) accumulate. A transgression is a sin or a crime.
Actually, none of the words in #2 are exactly correct, but one is the right answer.
Jocelyn, I advise you read your text materials on these concepts.
To check your answers, we can review the definitions of the terms and see if your choices align with them:
1) Sand or gravel that naturally forms near Earth's surface is known as:
A. Pollen - Pollen refers to the microscopic particles produced by plants for reproduction and is not related to sand or gravel.
B. Ore - Ore refers to a naturally occurring material from which a valuable mineral can be extracted, and it is not specifically related to sand or gravel.
C. Aggregate - Aggregate refers to a collection of particles that are gathered together, often used in construction materials like concrete or asphalt. This can include sand or gravel, so this seems to be a possible correct answer.
D. Bedrock - Bedrock refers to solid rock that lies beneath soil, sediment, or other loose materials on the Earth's surface. It is not referred to as sand or gravel that naturally forms near the surface.
Based on the definitions, it appears that your answer for the first question, C. Aggregate, is correct.
2) When new clay sediment is deposited on top of old beach material, it's known as:
A. Regression - Regression refers to a retreat or movement back of a shoreline due to erosional processes. It does not describe the scenario mentioned.
B. Transgression - Transgression refers to the advance or movement of a shoreline inland caused by the deposition of sediment. This aligns with the described scenario, so this seems to be the correct answer.
C. Progression - Progression is a general term that does not specifically relate to the scenario mentioned.
D. Aggression - Aggression is a term unrelated to geologic processes and does not describe the scenario mentioned.
Based on the definitions, it appears that your answer for the second question, B. Transgression, is correct.
Therefore, your answers seem to be correct for both questions.