EMS 7 Science 3.1 Review of Vocabulary Chapter 3, Lesson 1 – Flashcards
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Suernova
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A tremendous explosive that breaks apart
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A system of units used by scientists to measure the properties of matter
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International system of Units (SI)
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A system of measurement based on the number 10 and developed in the 1790s
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Metric System
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A measure of how much matter is in an object
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Mass
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A measure of the force of gravity acting on an object
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Weight
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The amount of space that matter occupies
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Volume
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A measure of how much matter is in an object
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Mass
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The curved upper surface of a liquid in a column of liquid
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Meniscus
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The measurement of how much mass of a substance is contained in a given volume
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Density
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Scientists use ________ units of measurement, rather than nonstandard units (like body parts) to minimize confusion and to be able to communicate accurately with other scientists all over the world
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standard
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The prefix kilo- (k) means...
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1,000
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The prefix milli- (m) means...
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0.001
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The prefix centi- (cm) means...
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0.01
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What would change if you were on Mars, your mass OR weight?
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weight
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The basic SI unit for measuring length is the ...
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meter
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On what mark do you start measuring with a metric ruler or meter stick?
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zero
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What unit would you use to measure long distances (like those between cities)?
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kilometer
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How many centimeters are in a meter?
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100
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How many millimeters are in a centimeter?
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10
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What tool do you use to find the mass of an object?
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balance
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What is the SI unit for measuring mass?
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kilogram
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What is the SI unit for measuring weight?
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Newton
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To find the mass of large objects like cars, people or bicycles, you would use which unit?
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kilograms
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To find the mass of smaller objects like a pencil, a paperclip or a candy bar, you would use which unit?
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grams
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Your mass on the moon is the same as your mass on the earth...true or false?
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true
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There are 100 milligrams in a gram...true or false?
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false
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What tool is used to measure weight?
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scale
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In SI, the basic unit for measuring volume is the...
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cubic meter
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When finding the volume of liquids, what unit do you use?
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liter
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Where should you read the meniscus? The top or the bottom?
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bottom
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The white board eraser is 7cm long, 3 cm wide and 1 cm high... what is the volume of the eraser?
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21 cm3
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You can use the ____________ method to find the volume of irregular solids
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displacement
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The SI unit for measuring density is ....
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kg/m3
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If you want to decrease the density of an object you would ________ its volume (or spread its mass out over a greater area) then it might float.
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increase
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Which is more dense, a beach ball or a bowling ball?
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bowling ball
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If you have a piece of bread, and you want it to sink, rather than float, you would smoosh it into a ball (or ________ its volume) to increase its density.
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decrease
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An orange has a mass of 60g and a volume of 20 cm3...what is its density?
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3 g/cm3
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What is the density of water?
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1.0 g/cm3
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A piece of wood has a density of 0.7 g/cm3, will it sink or will it float?
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float
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All samples of pure substances (elements), no matter how large or small, have the same ______
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density
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The official SI unit for temperature is the...
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kelvin
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Scientists like to use the Kelvin scale because its units are the same size as those in the celsius scale and there are no ________ numbers.
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negative
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In the Celsius scale, water freezes at _ degrees
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0
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In the Celsius scale, water boils at ___ degrees
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100
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The SI unit used to measure time is the ...
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second
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What tool is used to measure temperature?
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thermometer
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What tool is used to measure time?
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stopwatch
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How many minutes are in an hour? How many seconds are in a minute?
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60
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In order to find the density of an object, first you must know its ___ ___ _______
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mass and volume
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What is the abbreviation for the International System of Units?
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SI
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What formula do you use to determine the volume of a rectangular solid?
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l x w x h
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Anything that takes up space and has mass
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Matter
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Shape, color, texture, size (including mass, weight, volume and density) are all __________ of matter
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properties
