Toggle Navigation
Games
Blog
Class PIN
Join for Free
Sign in
Toggle Navigation
Games
PIN
Join for Free
Blog
Pricing
Contact us
Help center
Sign in
Study
Machines
0
%
0
0
0
Back
Restart
What are the 4 forces that help a plane fly?
lift, weight, thrust, drag
Oops!
Okay!
Which of these are necessary for a plane to take off?
thrust less than drag
lift greater than weight
lift less than weight
thrust equal to drag
Oops!
Okay!
What is an inclined plane used for?
makes it easier to move things or people to higher or lower levels
Oops!
Okay!
this is what thrust does________________
the force that pushes the plane upwards
the resistance of the air that pulls back the plane
the force which pulls a plane forwards
Oops!
Okay!
what is this?
a wedge
Oops!
Okay!
A complex machine is
composed of 3 or more parts
composed of 2 or more parts
composed of 4 or more parts
composed of 1 part
Oops!
Okay!
Machines are only complex things composed of many parts.
True
False
Oops!
Okay!
Gravity pushes a boat ________________.
downwards
Oops!
Okay!
Is this a complex or simple machine?
complex
Oops!
Okay!
Which one of these is a complex machine?
seasaw
wheelbarrel
wheel and axle
pulley
Oops!
Okay!
which of these help a bicycle move?
wedge
screw
wheel and axle
Oops!
Okay!
Is this a complex or simple machine?
simple
Oops!
Okay!
Is this a complex or simple machine?
simple
Oops!
Okay!
What does a pulley do?
it is used to lift or pull heavy things
Oops!
Okay!
Is this a complex or simple machine?
simple
Oops!
Okay!
Your experience on this site will be improved by allowing cookies.
Allow cookies