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Unit 1 Nature of Science Review Sheet
Terms in this set (30)
What do we call all the info in the universe and the process that is used to collect it?
What do we call the approach used by scientists to solve problems?
What do we call any part of an experiment that changes?
What are the 2 variables that will be found in any experiment?
independent and dependent variables
How many variables should you test for in a good experiment?
What is a constant in an experiment?
part of an experiment that DOES NOT change
Why must everything be constant in an experiment except what you are testing?
so that another variable isn't introduced
What do we call an experiment that is run exactly the same without the variable?
What is the purpose of the control?
it allows you to COMPARE with the independent variable to make sure it is causing the change
What is the independent variable?
the variable that I can change
What is the dependent variable?
the variable that happens in response to what I do
What is reaction time?
the time it takes to respond to something
What were the 4 variables in the lab activity using ramps, carts, and photogates?
height of the ramp, the weights, the placement of the photogates, and the distance between the photogates
What is the metric unit for length?
What is the metric unit for mass
What is the metric unit for volume?
What is measurement?
a repeated observation of a quantity or number
What is the difference between precision and accuracy?
precision is how detailed or exact something is and accuracy is the correctness of the measurement
What is the procedure for taking the volume of a liquid?
pour liquid into graduated cylinder, measure from BOTTOM of the meniscus (curved bubble)
How can the volume an irregularly shaped object be taken?
measure the volume of the liquid, place in object, read new volume, subtract original volume from new volume
What are the boiling points for boiling and freezing in celsius?
If there are 289.98cm, how many mm would that be?
If there are 14.56 cm how many meters would that be?
If there are 178 mm, how many cm would that be?
How many cm are on a meter stick?
What does the prefix 'centi' mean?
How many mm are in a cm?
What are the tools to measure; mass, volume, and length?
mass-balance; volume-graduated cylinder; length-meter stick/ruler
What is the definition of mass?
the amount of matter in an object
What is the definition of volume?
the amount of space something occupies
What is the magnification of the eyepiece?
what are the 3 parts of the long bone and where are they located?
when calculating an investment's net present value, which table is used when the annual cash flows are even or equal?
Who reunited China after the Han dynasty?
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