ЖАҢА
Қаріп өлшемі
Жұмыс парақтарыIntro to Simple Machines
Total сұрақ: 12
Worksheet time: 23mins
A lever is a simple machine used to help________?
hold two things together
lift heavy objects
push objects
throw heavy objects
The device used to raise a flag up a flag pole is an example of a
wheel and axle
lever
inclined plane
pulley
A ____________ is a push or a pull on an object.
friction
force
magnet
gravity
Why do engineers use simple machines?
Engineers creatively use their knowledge of science and math to make our lives better, often using simple machines.
They invent tools that make work easier.
They accomplish huge tasks that could not be done without the mechanical advantage of simple machines.
They design structures and tools to use our environmental resources better and more efficiently.
All of the above
What is this?
wedge
lever
inclined plane
pulley
What is a mechanical advantage?
not using simple machines
making the task harder
using simple machines so the task is easier
