how would the the number 0.0421 be expressed using scientific notation?
a. 4.21x10 2
b. 421.0x10 4
c.4.21x10 -2
d.421.0x10 -4
What is c. 4.21x10 -2
100
what is the original measurement 32m converted into kilometers?
What is 0.032
100
true or false. when you describe a position, you must only specify a distance.
What is false
100
what type of force involves two objects touching?
What is contact force
100
what is the definition of the word fluid?
What is any substance that can flow into an object and take that object's shape.
200
what is the definition of the word technology in scientific method?
What is the practical use of scientific knowlege
200
what is the original measurement 32m converted into hectometers
What is 0.32
200
which statement indicates that motion has occurred?
a. the reference point has changed
b. the position of the object has changed
c. the object being described has changed
What is b. the position of the object has changed
200
the formula acceleration=net force/ mass applies to newton's __ law of motion.
What is 2nd
200
explain how friction affects an object in motion.
What is friction opposes the movement of an object.
300
the _____ is the part of the controlled experiment that is used to study how a change in the independent variable changes the dependent variable.
What is experimental group
300
differentiate the I.S. of units from older systems of measurement. identify 2 different ways they are different.
What is easy to convert and used world wide
300
true or false. directing someone to walk north and west is describing a position in two dimensions.
what is true
300
an astronaut's ____ changes a he or she goes from earth to space.
a. size
b. mass
c. weight
What is c. weight
300
true or false. air is not a fluid?
What is false.
400
which phrase does not describe a hypothesis?
a. can be tested
b. always correct
c. possible explanation
d. based on observations
What is b. always correct
400
the I.S. of units is easily converted using a base of ....
What is ten
400
which variable is NOT a part of an object's velocity?
a. mass
b. speed
c. direction
What is a. mass
400
what is the definition of the word inertia?
What is tendency of an object to resist a change in motion.
400
what is the definition of the word scientific notation?
What is a method of writing or displaying very small or very large numbers.
500
volume is measured using...
What is a graduated cylinder
500
what is the original measurement 32m converted into millimeters?
What is 32,000
500
true or false. a car's speedometer indicates its instantaneous speed.
What is true
500
force that two objects apply to each other is called ______.
What is momentum
500
physical science is the study of...
What is the study of physics and chemistry of nature.