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23 terms

Science 7-Final

STUDY
PLAY
1 kg =
1,000 grams
1 m =
100 centimeters
1 L =
1,000 milliliters
Hypothesis
a prediction of the outcome of an experiment
Inference
a statement believed to be true based on observations
Observation
using your senses or tools to record properties of an object
Why is the metric system used in science?
• The metric system is used worldwide...except U.S.
• The metric system is based on 10, which makes conversions easier.
What tool is used to measure mass?
a balance
What tool is used to measure weight?
a scale
What tool is used to measure distance?
a ruler/meter stick
What tool is used to measure volume?
a beaker or graduated cylinder
Length=(metric units)
meters
Force= (metric units)
Newtons
Mass= (metric units)
grams
Volume=(metric units)
cm3 or milliliters
Speed= (metric units)
meters/seconds
Weight= (metric units)
Newtons
Density= (metric units)
grams/ cm3
Acceleration= (metric units)
meters/second/second
Temperature= (metric units)
degrees Celsius
What is volume?
Volume is the amount of space matter occupies. (the size of an object)
How do you calculate the volume of rectangular objects?
V=L x W x H
How do you calculate the volume of irregular objects?
Irregular objects: find volume by displacement (measure how much the volume of water increases when an object is submerged in water)