A skydiver jumps from a high-flying plane. As the velocity of her fall increases, the acceleration
A) increases.
B) decreases.
C) remains unchanged regardless of air resistance.
B
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The longest of all ocean waves are called ____
A) tsunami B) tides C) storm surge D) wind wave
The resistance of a mineral to scratching or abrasion is known as ________
A) luster B) cleavage C) streak D) hardness
Concerned about the use of so many toxic chemicals in her life, Monica tells her friend Amber that she wishes there was something she could do. Amber responds, "Well, one thing that you can do is purchase the new, less toxic forms of
A) household cleaning products." B) furniture refinishing products." C) reformulated gasoline." D) common medicines, such as aspirin and acetaminophen."
When volcanoes erupt, they emit ________ into the atmosphere, resulting in a cooling effect on the planet
A) sulfur dioxide B) methane C) water vapor D) nitrous oxide E) particulates