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# Sci: Metric System

### Key terms and examples for measuring in the metric system

Question | Answer |
---|---|

What is the metric system? | a system of measurement based on the number 10 |

Modern scientists use a version of the metric system called ___________ (abbreviated ____). | International System (SI) |

What are the advantages of scientists using SI as the standard system of measurements? | Scientists can compare data and communicate with each other about their results accurately without having to convert all the measurements. |

What number does the prefix "deka-" refer to? | 10 |

What number does the prefix "hecto-" refer to? | 100 |

What number does the prefix "kilo-" refer to? | 1,000 |

What number does the prefix "deci-" refer to? | 0.1 (one tenth) |

What number does the prefix "centi-" refer to? | 0.01 (one hundredth) |

What number does the prefix "milli-" refer to? | 0.001 (one thousandth) |

What prefix refers to the number 10? | deka- |

What prefix refers to the number 100? | hecto- |

What prefix refers to the number 1,000? | kilo- |

What prefix refers to the number 0.1? | deci- |

What prefix refers to the number 0.01? | centi- |

What prefix refers to the number 0.001? | milli- |

How do you convert a metric unit to the next size LARGER? | divide by 10 |

How do you convert a metric unit the the next size SMALLER? | multiply by 10 |

What is length? | the distance from one point to another |

In the SI (metric) system, what is the basic unit to measure length? | meter |

1 meter = _______ centimeters | 100 cm |

What tool is used to measure length? | metric ruler |

What is mass? | the measure of the amount of matter an object contains (weight) |

In the SI (metric) system, what is the basic unit to measure mass? | kilogram |

1 kilogram = ______ grams | 1,000 grams |

What tool is used to measure mass? | triple beam balance |

What is the definition of weight? | a measure of the force of gravity acting on an object |

What is volume? | the amount of space an object takes up |

In the SI (metric) system, what is the basic unit to measure volume? | liter |

1 liter = _____ milliliters | 1,000 milliliters |

What tool is used to measure volume? | graduated cylinder |

What is the formula to measure volume of a rectangular solid? | V=LxWxH (volume = length x width x height) |

Which unit of measurement below would be best used for volume of a solid object? (A) cubic meter (B) cubic gram (C) liter (D) cubic centimeter | (D) cubic centimeter |

What is a method that you could use to measure the volume of an irregular solid? | immerse the object in water and measure how much water is displaced |

What is density? | a measure that compares the mass of an object to its volume |

What is the formula to measure density of an object? | D=m/v (density = mass divided by volume) |

Which 2 units of measure would best be used for density? (A) grams per milliliter (B) cubic grams (C) grams per cubic centimeter (D) cubic centimeter | (A) grams per milliliter (C) grams per cubic centimeter |

Is the density of an substance the same for all samples of the substance? | No |

An object will float if it is ______ (less or more) dense than the surrounding liquid. | less dense |

What is the SI unit used to measure time? | second |

1 second = 1,000 ________ | milliseconds |

What is temperature? | the measure of how hot or cold something is |

What is the temperature scale that scientists commonly use? | |

What is the official SI unit for temperature? | Kelvin |

What is true about the Kelvin scale? | |

What is an equation that shows how two units of measurement are related? | conversion factor |

What is the abbreviation for kilometers? | km |

What is the abbreviation for meters? | m |

What is the abbreviation for centimeters? | cm |

What is the abbreviation for millimeters? | mm |

What is the abbreviation for grams? | g |

What is the abbreviation for kilograms? | kg |

What is the abbreviation for liters? | L |

What is the abbreviation for milliliters? | mL |

Give an example of the approximate length of a millimeter. | the thickness of a credit card OR the thickness of your fingernail |

Give an example of the approximate length of a centimeter. | the metal band on a pencil eraser OR the width of your pinky fingernail |

Give an example of the approximate length of a meter. | the height from the floor to a door knob |

Give an example of the approximate length of a kilometer. | a road |

What metric unit would you use to measure a the width of a sheet of paper? | centimeters |

What metric unit would you use to measure the height of a mountain? | kilometers |

What metric unit would you use to measure the height of a house? | meters |