earth science test 1 Flashcards
observation
description using your senses
length
meter
inference
conclusion based upon observation
volume
liter or cm cubed solid
mass
gram
1000x
kilo
100x
hecto
10x
deka
0.1 or 1/10
deci
0.01 or 1/100
centi
0.001 or 1/1000
milli
percent error
a measurment of how wrong an answer is
lower percent error is better
percent error formula
difference/ actual value x 100%
earth –> moon
239000 miles
earth –> sun
93,000,000 miles
coldest temperature
0.0000002 degrees celsius
scientific notation
a system for writing large or small numbers accuratley
ex- 5.478x 10 to the 4th
why do we measure mass not weight
weight is a measure of the pull of gravity on an object weight will weigh different when gravity is different. mass is a measure of the amount of matter in an object. mass is the same anywhere
temperature
NOT HOW HOT OR COLD SOMETHING IS
a measurment of the average kinetic energy (speed) of molecules
slowly moving molecules
cold
fastly moving molecules
hot
water freezes
32f–>0c–>273k
volume
amount of space an object occupies
solid
centimeters cubes
liquid
mL
regular shapes
formula and measure
irregular shapes
water displacement