Show:
Scientific Method
Kinetic and Potential energy
forces
miscellaneous
100
what are the steps of the scientific method in the correct order?
question, hypothesis, experiment, analyze data, conclusion
100
when is potential energy greatest - when a diver stands on a 40 foot diving board or when he stands on a 15 foot diving board?
40 foot
100
a skateboarder rolls down a hill until he hits a wall. which law of motion does this best show?
1- an object in motion stays in motion unless acted on by an outside force
100
why does adding wheels decrease the amount of force needed to move something?
decreases friction
200
a student says that the beaker has 10 mL of water in it. This is a/an

hypothesis

observation

theory

observation
200
a pencil falls to the ground. which is decreasing- kinetic energy or potential energy? which is increasing- kinetic energy or potential energy?
PE decreases as KE increases
200
when the net force does not equal zero what happens?
the object will move in the same direction of the bigger force
200
you want to push a box up a ramp.which situation would require less force for you to move the box.


if the ramp was smooth wood

if the ramp had sandpaper on it

smooth wood = less friction to overcome
300
you do an experiment to test how much time it takes a rose to grow 3 inches with different amounts of sunlight. One rose was placed in a dark closet, one rose was placed in a sunny window, and one rose was placed in a dimly lit basement.


what is the independent variable?

amounts of sunlight
300
a skiier goes down a hill. when is the kinetic energy the greatest?

top of the hill

middle of the hill

bottom of the hill

bottom
300
you kick a soccer ball and it rolls down the field. what force eventually causes it to stop?
friction
300
what instrument is used to measure the magnitude of a force?
spring scale
400

you do an experiment to test how much time it takes a rose to grow 3 inches with different amounts of sunlight. One rose was placed in a dark closet, one rose was placed in a sunny window, and one rose was placed in a dimly lit basement.

what is the dependent variable?

time it takes to grow 3 inches
400
why do people put oil on the gears of their bikes?
to reduce friction
400
if it takes 1 Newton of force to lift a 3 pound box, how many Newtons would be needed to lift a 6 pound box?
2 N
500

you do an experiment to test how much time it takes a rose to grow 3 inches with different amounts of sunlight. One rose was placed in a dark closet, one rose was placed in a sunny window, and one rose was placed in a dimly lit basement.

what are 3 things that need to be held constant?

type of soil, amount of water given, size of the pot, type of rose, age of rose
500
if something has more mass what happens to the amount of force needed to move it?
you need more!
500
why is it important to have all factors constant except for the independent variable?
you don't want to get confused. you wont be able to draw good conclusions. you wont know what exactly is affecting the dependent variable.