Elastic Force

Items that are elastic include...

• metal wires.

• concrete blocks.

• plastic spring toys.

• all of the above

A rubber band keeps a newspaper tightly rolled because it

• can be tied tightly

• exerts elastic force

• is unbreakable

• none of the above

What happens when the stretching force on an elastic material is released?

• The material breaks.

• The material remains stretched out.

• It does nothing

• The material snaps back to its original shape.

Tags

NGSS.MS-PS3-5

Something that is elastic springs back after being stretched.

• True

• False, it remains stretched out

• False, it breaks

• False, but I do not know why

An elastic material resists a change in shape.

• True

• False, it will always change shape

• False, elastic items stay stretched out

• False, but I do not know why

Elastic force is not very useful.

• True

• False, we use elastic force in many different ways

• False, I like trampolines

• False, but I do not know why

Glass is an example of an elastic material.

• True

• False, Glass does not stretch

• False, Glass stretched but only a little

• False, but I do not know why

What are the units of Force?

• kg m/sec
• kg m
• N
• N sec

Tags

NGSS.HS-PS2-1

True or False:

A force can make a moving object change direction.

• True

• False

Tags

NGSS.MS-PS2-2

True or False:

Elastic force pulls objects toward each other.

• False

• True