In a Study of the Effects of Alcohol, a Researcher

question 80

Multiple Choice

In a study of the effects of alcohol, a researcher compares reaction time of people who had 8 drinks against those who had 6 drinks, 4 drinks, 2 drinks, or 0 drinks.How many experimental groups are there in this design?

• A) 2
• B) 4
• C) 5
• D) 8

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Definitions:

River's Flow

The movement of water in a river channel as it travels from the headwaters to the mouth, influenced by gravity and landscape.

Gravity

The force that attracts a body towards the center of the earth, or towards any other physical body having mass, playing a key role in the movement and deformation of the Earth's crust.

Sediment Load

The amount of sediment, including material chemically dissolved in a solution, carried by a stream.

Clasts

Rock fragments or grains that are cemented together in a sedimentary rock.