1. A device that does work with only one movement is a ____________________.
a. compound machine.
b. simple machine.
c. force.
d. momentum effort. - correct_answ
2. A grooved wheel with a rope or chain running through the groove is a __________.
a. lever.
b. screw.
c. wheel and axle .
d. pulley. - correct_answ
, 3. A ______________is an incline plane wrapped in a spiral around a cylindrical post.
a. pulley .
b. screw .
c. ramp .
d. lever . - correct_answ
4. A machine made up of two or more simple machines is a _______________
a. mechanical advantage.
b. lever.
c. compound machine.
d. wheel and axle. - correct_answ
5. The use of machines makes work ________.
a. harder.
a. compound machine.
b. simple machine.
c. force.
d. momentum effort. - correct_answ
2. A grooved wheel with a rope or chain running through the groove is a __________.
a. lever.
b. screw.
c. wheel and axle .
d. pulley. - correct_answ
, 3. A ______________is an incline plane wrapped in a spiral around a cylindrical post.
a. pulley .
b. screw .
c. ramp .
d. lever . - correct_answ
4. A machine made up of two or more simple machines is a _______________
a. mechanical advantage.
b. lever.
c. compound machine.
d. wheel and axle. - correct_answ
5. The use of machines makes work ________.
a. harder.
