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# Ch.9 How Things Move

If you add _____ to an open door, it moves. force
The location of an object is its ________. position
What is caused by an object rubbing against another object? friction
When an object changes position, it is in ______. motion
The pull of gravity determines the ______ of an object. weight
Scientists measure weight in _______. newtons
The length between two places is called ______. distance
A _____ is a unit of measurement in the English system. pound
What causes things to fall to Earth? gravity
What do we use to measure how fast something moves? speed
A skier changes direction when they change _______. positions
In order to have the shortest time, you have to run the farthest in shortest time
Why is it hard to skate on a gravel road? gravel increases friction
What measurements are needed to measure speed? time and distance
What will slow down an object? friction
If you run 4 miles in an hour, how far can you run in 1-1/2 hours? 6 miles
If you run 12 miles in an hour, how far can you run in 1-1/2 hours? 18 miles
What direction would you travel to go from Illinois to Florida? South
What 2 properties would cause a beach ball to travel a shorter distance than a baseball? surface area and friction
If you pick up a bowling ball, football, and golf ball, how do you know a bowling ball weights the most? takes more force to pick up bowling ball
If you throw a ball in space, how far will it travel? forever
Created by: CPS3rd