intro to science test Flashcards
convert 42000 mL to L
42 L
convert 7.46 m to mm
7460 mm
convert 13.49 Dkg to g
134.9 g
convert 42800 mL to hL
0.42800 hL
convert 948 cL to hL
0.0948 hL
state the metric conversions in order
kilo hecto deka meter liter gram deci centi milli
state the steps in order for graphing
- title very descriptive
- label axis (x-independent y-dependent) (label = variable then unit)
- set up axes
- plot data
- make a key
state the steps to set up axes w/numbers
- look at data and determine range (highest # - lowest #)
- look at axes count # of lines up and across (across = 42, down = 58)
- determine interval (interval = range divided by # of lines) almost always will be a decimal so round up to next value that makes sense (good idea to start 1 interval below your lowes #)
what does ~ mean on graph
skipping ahead numbers on a graph
state all 7 steps in scientific method
- observations
- state the question/problem
- gather information
- form hypothesis
- test hypothesis (experiment)
- draw conclusions
- report results
what are the 2 main branches of science and explain them
social science: deals with nature
natural science: tries to understand how nature or the whole universe behaves
what is biological science, physical science, earth science
biological science: life science
physical science: 2 branches are: chemistry: science of matter and how it changes and physics: science of forces and energy
earth science: 2 branches are: geology: physical nature + history of earth and meteorology: study of atmosphere and weather
name three types of graphs and explain them
line graphs: show continuously changing data
bar graphs: compare values of items
pie graphs: shows all the parts of a whole
what is the method of reducing the # of zeros in very big or very small #’s and expressing them as a power of ten
scientific notation
rule for multiplying in scientific notation
add powers of ten
rule for dividing in scientific notation
subtract powers of ten
indicates the exactness of a measurement; how close measurements are to each other
precision
indicates how close a measurement is to the true value
accuracy
used by scientists to show the precision of ameasurement
significant figures; tell you how precise the measurement is but not how accurate it is
moving into scientific notation; if exponent is positive then…
original # was big/large (greater than 1)
moving into scientific notation; if exponent is negative then…
original # was small (less than 1)
when moving into scientific notation, moving the decimal right equals
negative exponent
when moving into scientific notation, moving the decimal left equals
positive exponent
moving out of scientific notation; positive exponent =
make a big # (move right)
moving out of scientific notation; negative exponent =
make a small # (move left)
3.5610 x 10 to the 4 power
35610
2.543 x 10 to the -3 power
0.002543
8.235 x 10 to the -4 power
0.0008235
0.00387 x 10 to the 5 power
387
0.00854 x 10 to the -5 power
0.0000000854
477.8 x 10 to the 7 power
4778000000
0.000189 move into scientific notation
1.89 x 10 to the -4 power
100500500 move into scientific notation
1.005005 x 10 to the 8 power
12500000000000000000 move into scientific notation
1.25 x 10 to the 19 power
-0.000006895 move into scientific notation
6.895 x 10 to the -6 power
-45000000 move into scientific notation
-4.5 x 10 to the 7 power
9.647 x 10 to the power of 7
96,470,000
