Focus On Life Science: California Grade 7

Chapter 9: The Musculoskeletal System and Levers

Standard Assessment

1.
Joints belong to which of these body systems? 5.a
A)digestive system
B)muscular system
C)nervous system
D)skeletal system
2.
Which of these is not a type of human muscle tissue? 5.a
A)cardiac
B)skeletal
C)smooth
D)rough
3.
_______ energy is needed for muscle activity. 5.a
A)Potential
B)Kinetic
C)Chemical
D)Thermal
4.
Where are blood cells made? 5.c
A)compact bone
B)marrow
C)periosteum
D)cartilage
5.
The end of bones are covered with what? 5.c
A)cartilage
B)tendons
C)ligaments
D)muscle
6.
Where are human immovable joints found? 5.c
A)in the wrist
B)in the skull
C)at the elbow
D)at the neck
7.
What type of joint do your elbows have? 5.c
A)ball and socket
B)gliding
C)hinge
D)pivot
8.
What is the term for any place where two or more bones come together? 5.c
A)ligament
B)joint
C)Preservation
D)periosteum
9.
Which of these muscle types is attached to bones by thick bands of tissue called tendons? 5.c
A)involuntary
B)smooth
C)cardiac
D)skeletal
10.
Muscles that you are able to control are called _______. 5.c
A)cardiac muscles
B)involuntary muscles
C)voluntary muscles
D)smooth muscles
11.
When the flexor or hamstring muscles of your thigh contract, the lower leg is brought toward the thigh. What happens to the lower leg when the extensor or quadriceps muscles contract? 5.c
A)The leg straightens.
B)The flexors contract.
C)The extensors contract.
D)The lower leg is brought toward the thigh
12.
In which class of levers is the resistance between the fulcrum and the effort? 6.h
A)second-class levers
B)first-class levers
C)third-class levers
D)all classes of levers
13.
Your upper and lower leg along with your knee joint forms a ______ lever. 6.h
A)third-class lever
B)first-class lever
C)second-class lever
D)first- and second- class levers
14.
Which of these acts as a fulcrum in the body? 6.h
A)tendon
B)muscle
C)bone
D)joint
15.
Which class of lever is found most in the human body? 6.h
A)first-class lever
B)third-class lever
C)second-class lever
D)first- and second- class levers
16.
On what point does a lever pivot? 6.h
A)the arm
B)the middle
C)the fulcrum
D)the end
17.
Mechanical advantage is equal to __________. 6.h
A)output force divided by input force
B)input force divided by output force
C)input force times output force
D)output force times input force
18.
What is the mechanical advantage if 50 J are put in and 200 J are produced? 6.h
A)200
B)1000
C)50
D)4
19.
The __________ is the number of times a force is multiplied by a machine. 6.h
A)resistance force
B)effort force
C)mechanical advantage
D)power
20.
Which of the following tools is a lever? 6.h
A)ramp
B)shovel
C)screw
D)ax
Grade 7
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