Scientific Method
Which step comes first in the scientific method?
Observation
When conducting an __________, I will plan it out and gather my materials before starting the procedure.
experiment
What does a scientific law describe?
natural phenomena
What kind of numbers do we use scientific notation for?
Really big or small
One meter stick has ____ cm and ___ mm
100cm
1000mm
What does the experiment test?
Hypothesis
Name two variables...
independent, dependent, control
Question: Which of the following best defines a scientific theory?
Scientific research with a lot of experiment and data that explain how and why the theory is.
20,000,000 is written how is scientific notation?
2.7 x 107
What is the base unit for length? volume? mass?
meter
liter
gram
What is the difference between independent and dependent variables?
The independent variable is what we change in the experiment, the dependent variable is what we are measuring and DEPENDS on the independent variable.
Scenario: A scientist wants to determine how different amounts of sunlight affect the growth of tomato plants.
What is the independent variable?
sunlight
Question: How does a scientific law differ from a scientific theory in terms of what it explains?
A scientific law describes how something happens, while a scientific theory explains why it happens.
3.2 x 10-5
Write in standard form
0.000032
You measured a bottle of liquid at 325mL. What is that measurement in kL?
0.000325kL
There are 4 criteria that must be met for something to be scientific...one of them is that experiments can be done again and again consistently, it is not a one time thing...this means it is _________able.
Repeatable
In an experiment testing the effect of different amounts of sunlight on tomato plant growth, which of the following is the dependent variable?
tomato plant growth
Correct this false statement to make it true.
Scientific laws explain how and why something occurs on a scientific level.
Scientific theories explain how and why something occurs on a scientific level.
What do you do with your exponents when you multiply numbers like
2 x 102 * 3 x 105
Solve this problem
you add them
6 x 107
5000g is how many mg? and how many kg?
5,000,000mg
5kg
Put these steps in order...
experiment
conclusion
observation
collect and analyze data
hypothesis
observation
hypothesis
experiment
collect and analyze data
conclusion
Scenario: A chemist is investigating how temperature affects the rate of a chemical reaction between vinegar and baking soda.
Give both the independent variable and the dependent variable.
Independent is temperature
dependent how fast (amount of time) the reaction takes place
Give one major difference between law and theory in the scientific meanings.
answers vary
352,000,000,000,000,000
write this number is scientific notation
3.52 x 1017
you measured 3 objects, one had a length of 2m, another had a volume of 14L, and the third had a mass of 52kg. Can you give me the
kilo, hecto, Deca, base unit, deci, centi, and milli for each measurement?
.002km .02hm .2Dm 2m 20dm 200cm 2000mm .014kl .14hl 1.4 Dl 14L 140dl 1400cl 14000ml
52kg 5.2hg .52Dg .052g .0052dg .00052cg .000052mg