Georgia Science Grade 7

Chapter 23: Immunity and Disease

CRCT Practice

1
According to the information in the graph, which group had the lowest life expectancy in both 1975 and 1994?

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A)white males
B)black females
C)white females
D)black males
2
A reasonable hypothesis based on the information in the graph is that life expectancy

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A)decreased for black males between 1970 and 1984.
B)is longer for females than for males.
C)decreased for white males between 1970 and 1980.
D)is longer for males than for females.
3
Which of the following diseases had the highest number of cases before vaccine?

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A)diphtheria
B)mumps
C)rubella
D)pertussis
4
Which of the following diseases had the highest number of cases after vaccine?

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A)measles
B)tetanus
C)mumps
D)rubella
5
Which of the diseases in the table are caused by bacteria?

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A)measles, rubella, mumps
B)measles, tetanus, mumps
C)mumps, pertussis, rubella
D)tetanus, pertussis, diphtheria
6
According to the table, which statement had the highest percentage of teen agreement?

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A)"I'd rather date people who don't smoke."
B)"Smoking keeps your weight down."
C)"Chewing tobacco and snuff causes cancer."
D)"I strongly dislike being around smokers."
7
According to the table, for which statement did teens have the highest percentage of no opinion?

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A)"Seeing someone smoke turns me off."
B)"I'd rather date people who don't smoke."
C)"It's safe to smoke for only a year or two."
D)"I strongly dislike being around smokers."
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