Science 7-Final

23 terms by lgb1999

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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)

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