(Q).
Answer the following question given this paragraph: The figure above also shows how the size of waves is measured ( Figure above ). The highest point of a wave is the crest . The lowest point is the trough . The vertical distance between a crest and a trough is the wave height . Wave height is also called amplitude . The horizontal distance between two crests is the wavelength . Both amplitude and wavelength are measures of wave size. Q: To figure out the height of a wave you measure the distance between the crest and what? Choices: - drift - core - crater - trough A:
(A).
trough

(Q).
Answer the following question given this paragraph: An antigen that causes an allergy is called an allergen. Q: What is defined as an antigen that causes an allergy? Choices: - an expectorant - a disinfectant - a pollutant - an allergen A:
(A).
an allergen

(Q).
Answer the following question given this paragraph: When magma heats groundwater, it may come to the surface as a hot spring or a geyser. Q: When magma heats groundwater, it may come to the surface as a hot spring or a what? Choices: - pond - cave - volcano - geyser A:
(A).
geyser