Ques: Answer the following question given this paragraph: Gyroscopes used in guidance systems to indicate directions in space must have an angular momentum that does not change in direction. Yet they are often subjected to large forces and accelerations. How can the direction of their angular momentum be constant when they are accelerated?. Q: What instruments used in guidance systems to indicate directions in space must have an angular momentum that does not change in direction? Choices: - actuators - elevators - magnets - gyroscopes A:
Ans: gyroscopes

Ques: Answer the following question given this paragraph: A drumlin is a long, low hill of sediments deposited by a glacier. Drumlins often occur in groups called drumlin fields. The narrow end of each drumlin points in the direction the glacier was moving when it dropped the sediments. Q: What is the name of a long and low hill of sediments which have been deposited by a glacier? Choices: - a mountain - a crag - a floodplain - a drumlin A:
Ans: a drumlin

Ques: Answer the following question given this paragraph: Macroevolution is evolution over geologic time above the level of the species. One of the main topics in macroevolution is how new species arise. The process by which a new species evolves is called speciation . How does speciation occur? How does one species evolve into two or more new species?. Q: What is the term for evolution over geologic time above the level of the species? Choices: - mutation - speciation - microevolution - macroevolution A:
Ans: macroevolution

Ques: Answer the following question given this paragraph: Blood enters the kidney through the renal artery, which branches into capillaries. When blood passes through capillaries of the glomerulus of a nephron, blood pressure forces some of the water and dissolved substances in the blood to cross the capillary walls into Bowman's capsule. Q: Through which artery does blood enter the kidneys? Choices: - thoracic artery - jugular - cerebral artery - renal artery A:
Ans:
renal artery