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When we push or pull something, or pick up an object up from the ground we are using _______(58)
Force
T/f: forces can’t make objects change shape
False
T/f: forces can break objects
True
T/f : not all objects respond to force the same way.
True
______ ______ go back to their initial shape when a force stops acting upon them.
Elastic objects
______ _______ do not return to their initial shape.
Plastic objects
Clay is an example of a _______ object
Plastic
T/f: objects that break do not change their shape.
True
Rigid objects ______(58)
Break
T/f: An object at rest can move without a force. (59)
False
____ is the force that slows down and stops a moving object when it is in contact with another object.
Friction
To make an object move you have to ____?
Put force on it
T/f: When an object vibrates it makes big movements very slowly
False: it makes SMALL movements very QUICKLY
When we sing we use our _____ _______
Vocal cords
Volume is measured in ______
Decibels (dB)
The pitch of a sound depends on the _____(6)
Speed
