Forces Vocab
a push or a pull on something. It is necessary to change the motion of an object.
force
an object is not moving
at rest
a force that acts on an object when it rubs against another object or material. The force of friction acts on an object when we try to move it across a surface.
friction
What would be a good explanation as to why someone is unable to move a heavy boulder (large rock)? Use the terms balanced force and unbalanced force in your response.
A heavy boulder is a balanced force because it has forces acting on it that are equal. It needs an unbalanced force to move it.
What is 6x9?
54
push or a pull that touches or comes in contact with an object to change motion.
contact force
to pull toward one another
ex.) iron and steel objects are attracted to magnets
attract
a force where one object pulls on another object-pulls things down or toward the center of Earth.
gravity
Describe one way that you could move the boulder. Explain why your way would work. Use the terms balanced force and unbalanced force in your answer.
answer will vary
What is 12x4?
48
a push or a pull that moves an object without touching or coming in contact with the object.
non contact force
the changing of position of an object.
motion
a material that has the ability to attract iron, steel
magnet
Look at the picture of the desk with the iPad. Use arrows to show the forces acting on the iPad.
see illustration
What is 5 sixes + 1 six ?
36
exists when forces acting on an object result in motion or change in motion.
unbalanced force
produced when electricity flows through a wire. coiling the wire around an iron bar increases the strength of the magnetic field.
electromagnet
the path along which something moves, lies, or points
direction
What is one way that the forces on the desk would no longer be balanced? Why?
answers will vary
What is 5 sevens + 3 sevens =
56
exists when all forces acting on an object result in the object staying at rest or moving at a constant speed in the same direction
balanced force
to push away from one another
repel
the attraction or repulsion (push or pull) produced by the poles in a magnet
magnetic force
When building a chain of paper clips with a magnet, the magnet can pick up the paper clips without even touching the paper clips (the paper clips seem to “jump” to the magnet.) What force is causing this to happen and why?
A non contact force because of magnetism the paper clips are attracted to the magnet and will just jump up to the magnet without us putting them there.
What is 12x12?
144