Chapter 5-Measuring
Matter
I wi! see how measurement compares an object to a
standard. My goal is _______________________.
Chapter 5-Measuring Matter-Study Guide
standard unit-an established quantity used for measure and comparison
mi!i-a prefix meaning one-thousandth of a unit
centi-a prefix meaning one-hundredth of a unit
deci-a prefix meaning one-tenth of a unit
kilo-a prefix meaning one thousand units
volume-a measure of the number of cubic units within a solid figure or object, or the amount of fluid a container can hold
mass- a measure of the amount of matter of an object
weight-a measure of the pu! of gravity on an object
density-the measure of how compact matter is, where mass is compared to volume
buoyant force-an upward force in fluids that opposes gravity
fluid-a substance that can flow
displace-to push aside
Chapter 5 Study Guide
How many inches are in a foot? 12 inches
Why is calculating area an important ski! for a painter? The painter wi! know how much paint to buy.
Which one is more dense? Helium or air? Air
Chapter 5-Measuring Matter Quiz
Write the term #om the word bank in the blank next to the correct definition
Word Bank
standard unit mi!i centi deci kilo volume mass weight
buoyant force displace
density
fluid
_______________________________________________________- a measure of the amount of matter of an object
_______________________________________________________-a measure of the pu! of gravity on an object
________________________________________________________-the measure of how compact matter is, where mass is compared to volume
________________________________ ____________________________________an upward force in fluids that opposes gravity
_______________________________________-a substance that can flow
____________________________________-a prefix meaning one-tenth of a unit
______________________________________-a prefix meaning one thousand units
___________________________________-a measure of the number of cubic units within a solid figure or object, or the amount of fluid a container can hold
_________________________ ___________________________________-an established quantity used for measure and comparison
_______________________________________-a prefix meaning one-thousandth of a unit
_____________________________________________-a prefix meaning one-hundredth of a unit
Chapter 5 Quiz Continued
How many inches are in a foot?
Why is calculating area an important ski! for a painter?
Which one is more dense? Helium or air?
Systems
standard unit-an established quantity used for measure and comparison
Measuring helps us precisely describe and compare matter
Matter has length, area, volume, mass, temperature, and density
length is measured by the customary
measure yard or metric measure meter
mi!i-a prefix meaning one-thousandth of a unit
There are 12 inches in 1 foot
centi-a prefix meaning one-hundredth of a unit
deci- a prefix meaning one-tenth of a unit
kilo-a prefix meaning one thousand units
Two major systems of measurement are metric and customary measure
Most people use the metric system
The United States uses the customary unit
The units of the metric system are based on the number 10.
Area and Volume
volume-a measure of the number of cubic units within a solid figure or object, or the amount of fluid a container can
hold.
Before a painter paints a house, he must know the area of the house, so he knows how much paint to buy.
Using volume you can decide how much liquid can go into a container. Ex. cup
a! surfaces or regions have area and a! 3-D figures have volume
Mass and Temperature
mass-a measure of the amount of matter of an object
weight-a measure of the pu! of gravity on an object
Basic measure of mass is kilogram
Weight is measured by pounds and ounces in the customary measurement system
temperature is an attribute of matter’
temperature is the measure of how much thermal energy in an object.
Density
density-the measure of how compact matter is, where mass is compared to volume
Cement is more dense than water. Therefore, cement ha more mass packed into the same amount of space when
compared with water.
The density of matter is the same regardless of its size
To calculate an object’s density-you divide its mass in grams or kilograms by its volume in cubic centimeters or
decimeters. The density of water is volume =1,000 cm3 and mass= 1000 g = 1000/1000= 1 cm3/g
Buoyant Force
fluid-a substance that can flow
buoyant force-an upward force in fluids that opposes gravity
displace-to push aside
The only way to make an object float is to push up with it with a force equal to the object’s weight.
For example, if you put a block of wood in water and the the buoyancy if the wood equals the weight of the wood ,
it floats.
Large steel ships float because the shape of the ship displaces a large amount of water.
Submarines contain ba!ast tanks. Ba!ast tanks are fi!ed with water to make the submarine submerge.
When it is time for the submarine to surface, air is pushed through the ba!ast tanks.