Chapter 7

a Spinning Top
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Terms in this set (21)
a Spinning Top
shows rotation by spinning on an axis
Image: a Spinning Top
the Ground during an Earthquake
shows vibration
Image: the Ground during an Earthquake
A cymbal as it is struck
shows vibration- quivers back and forth
Image: A cymbal as it is struck
plane flying
translation- moves in a line from one place to another
Image: plane flying
a mixer's spinning beaters
show rotation, spinning around an axis
Image: a mixer's spinning beaters
normal force
this force acts on a surface in a direction perpendicular to the surface. (the floor under our feet)
Image: normal force
friction
A force that opposes motion between two surfaces that are in contact (the wind pushing against a bird)
Image: friction
tension
stress that occurs when forces act to stretch an object (tug of war)
Image: tension
spring
shock absorbers on a car; a mattress
Image: spring
gravity
A force that pulls objects toward each other (a person falling off a couch)
Image: gravity
Electrical forcelightning or a flashlightmagnetic forcethe attraction or repulsion between magnetic poles (the earth's poles affecting a compass)When a baseball moves from one player to another its _________ changes.positionYou and a golfer might both describe the ______ ___________ of a ball from where you are standing.relative motionWhen you lean on a wall, it pushes back withnormal forcespinning fanrotationnoncontact forceselectricity, magnetism and gravitytension- examplea kite stringreference point while swingingthe horizonmoviesapparent motion (because of how fast things are going)Newton's first lawObjects in motion will stay in motion. Objects at rest will stay at rest. When a driver slams on his brakes, the passengers fly forward.

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