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# wh 6th science exam

### Mrs. wilson's exam for 6th grade at wilson hall study guide

What's earth's revoilution 30km/s
_____ is always used in science metric
measures work joule
a unit is eather ____, _____, or ______ meter liter gram
change convert
the distance the object travels in one unit of time speed
what is the formula for speed speed = ___distance___ time
means a steady pace constant speed
speed and direction of an object velocity
___ _____ ________ must keep very close tracksof the velocity of air craft air traffic controler
have the most stressful job air traffic controler
the hard outer layer of the earth lithosphere
dividing line boundary
a push or pull force
the overall force on an object after all the forces are added together net force
equal forces acting on one object in oppisite directions balanced forces
every object resist any change to its motion, the resistance is called _____ inertia
the (SI) unit of mass is the ________ kilogram
the amount of matter in an object mass
the kind of stuff that all objects are made out of matter
state newton's first law of motion an object at rest will remain at rest and an object that is moving at a constant speed will continue moving at a constant speed unless acted upon by an unbalanced force
one ______ equal the force required to accelerate one kilogram of mass at 1 meter per second per second newton
1 kilogram weighs about ____ 2.2 pounds
1 kilometer equals ______ .6 miles
a force that pulls down gravity
forces working in oppostite directions friction
a force that causes an obeject to move in a circle centripetal force
any object that travels around another in space satellite
the mass of a substancecontained in a unit of volume density
a substance that can easily change shape fluid
the ability to do work on an object energy
name 3 types of friction sliding, rolling, and fluid
two solid surfaces that slide over each other ; this creates most friction sliding friction
friction that occurs when an object rolls over a surface rolling friction
creates the least amount of friction fluid friction
when the only force acting on a falling object is gravity freefall
state newton's third law of motion if one object exerts a force on another object then the second object exerts a force of equal strength in the opposite direction on the first object
an object that is thrown projectile
state newton's 2nd law of motion for every action there is an equal and opposite reaction
moving away from the center , force pushing an object outward away from the center centrifugal force
the rate at which work is done power
the larger the acre results in ____ downward pressure less
air pressure at sea level is about ______ 10.bn/cm2
at higher elevations there is ___ air above you less
a break in the earth's crust where slabs of rock slip past each other fault
gas trap bubble
cave cavity
upside down wing spoiler
same bone structure but different function homogenous structure
why does water expand when frozen cause it forms a crystal
______ is less dense than air helium
_____ is less dense than water ice
______ have to travel faster than earth for orbit satellites
the titanic departed from_____ in _______ england 1912
takes place of displace
put under water submerge
weight = _______ gravity
front of the boat bow
back of the boat stern
change convert
what was wright brother's goal to fly a plane heavier than air
where did they test their odd vechile a deserted beach in kitty hawk north carolina
is a device with which you and do work in a way that is easier or more efficient machine
what is the formula for work F times D
the force you exert on a machine input force
the force exerted by the machine output force
is the output force a machine gives you to make work easier mechanical advantage
compare the input work to the output work efficiency of a machine
a machine who has an efficiency of ____ loses very little work 95%
an ideal machine would have efficiency of ___ 100%
Created by: 4clara