Georgia Science Grade 7

Chapter 17: Structure and Movement

CRCT Practice

1
If 99% of the people who die in bicycle accidents were not wearing helmets, to the nearest whole number, how many people who died in 1998 were wearing bicycle helmets?

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A)7
B)6
C)8
D)9
2
Which year had the greatest total number of bicycle deaths?

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A)1996
B)1997
C)1998
D)1999
3
Which type of joint do your elbows have?

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A)hinge
B)gliding
C)ball-and-socket
D)pivot
4
Which type of joint allows your legs and arms to swing in almost any direction?

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A)hinge
B)gliding
C)ball-and-socket
D)pivot
5
What is the name of the pigment that gives your skin color?
A)hemoglobin
B)keratin
C)melanin
D)calcium
6
Which type of muscle tends to contract quickly and tire more easily?
A)cardiac muscle
B)bladder
C)skeletal muscle
D)smooth muscle
7
What does the periosteum do?
A)connects bones together
B)covers the surface of bones
C)produces energy
D)makes vitamin D
8
Which type of muscle is found in the intestines?
A)skeletal muscle
B)smooth muscle
C)cardiac muscle
D)tendon
9
What type of lever is shown in the photo and where is the fulcrum?

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A)1st class, at the chin
B)1st class, at the top of the neck
C)2nd class, at the chin
D)2nd class, at the top of the neck
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