How does the slope (or gradient) of stream change with river length?
a. Steeper in lower parts & gentler in upper parts
b. Steeper in upper parts & gentler in lower parts
c. The slope remains relatively stable along the river
d. The slope changes irregularly along the river
Answer: b. Steeper in upper parts & gentler in lower parts
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Sound can travel for much greater distances through water than light waves can before being absorbed because ____
A) ?Sound waves continue to travel until something physically stops it. B) ?Sound waves pick up speed the longer it travels. C) ?Sound waves get absorbed and then retransmitted through the ocean every 50 feet allowing it to bounce faster than light waves. D) ?Sound waves travel through water more efficiently than light waves.
Which "R" of waste reduction can be described as "don't use it"?
A. reduce B. recycle C. redo D. refuse E. reuse
The hydrologic cycle
What will be an ideal response?
Which of the following is NOT a member of the Indo-European language family?
A) Chinese B) Hindi C) Spanish D) English E) Bengali