Why are glacial striations so important?
What will be an ideal response?
Answer: Striations are parallel scratches created by glaciers scraping the underlying bedrock. Aligned in the direction of ice flow, striations tell us the past movement of a glacier that has long since receded. By mapping striations on land once covered by continental glaciers, geologist can decipher the flow direction of the ice.
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The rings of Uranus were discovered when it passed in front of a star, and the dark rings occulted the star several times for brief intervals
Indicate whether the statement is true or false
A spacecraft in space keeps going at the same velocity, even without firing its rockets, in accordance with the _______________ law of motion
a. fourth b. first c. second d. third
A very dense 1500-kg point mass (A) and a dense 1200-kg point mass (B) are held in place 1.00 m apart on a frictionless table
A third point mass is placed between the other two at a point that is 20.0 cm from B along the line connecting A and B. When the third mass is suddenly released, find the magnitude and direction (toward A or toward B) of its initial acceleration. (G = 6.67 × 10-11 N ? m2/kg2)
If the temperature of a gas in a container goes from 0 C to 300 C, the pressure will
A stay the same B. double C. become 300 times greater D. become infinite