The Metric Measurement

When and why was the metric system invented? The metric system was invented in 1790 by French scientists.The metric system was invented because countries were using many different systems of measurement causing confusion and lack of consistency

deci milli centi hecto kilo deca meter, gram, liter K H D U D C M 1000 100 10 1 1/10 1/100 1/1000 .1 .01 .001 K H D U D C M deci milli kilo centi hecto deca meter, gram, liter 1/26/14

Scientists all over the world use the International System of Units to measure: Length Volume Mass Temperature Time

The metric system is based on the number 10 The metric system is based on the number 10. Our money system is also a base 10 system Ex. It takes 10 pennies to equal 1 dime. A dime is 10x more than a penny. If a dime is = 1 than a penny is 0.1.

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

Meter The entire stick is 1 meter.

(King Henry Died Unfortunately Drinking Chocolate Milk) KHDUDCM (King Henry Died Unfortunately Drinking Chocolate Milk) The three units that measure the length of objects smaller than a meter are, … decimeter centimeter millimeter

Smaller than the standard Deci = 1/10 or .1 Contains 10 decimeter markings. Every 10th centimeter is denoted as a decimeter by it's bigger font.

Smaller than the standard Centi = 1/100 or .01 Contains 100 centimeter markings. Numbered markings 1to the end of stick (100)

The longer lines on the metric ruler are called… centimeters

Smaller than the standard Milli = 1/1000 or .001 Contains 1000 millimeter markings (smallest lines)on the stick.

The smallest lines on the metric ruler are called… millimeters

 Reading Checkpoint One centimeter is divided into how many millimeters? 10 millimeters (mm)

Calculating: Measure the turtle from the rear of its shell to the tip of its nose. Record its length in both centimeters and millimeters. 10.5 cm 105 mm

Complete the Table Below Prefix Meaning Unit of Length one meter deci one-tenth centi centimeter one-thousand millimeter

Recap One meter is divided into _____ decimeters; one meter is divided into _____ centimeters, and one meter is divided into ______ millimeters 1/26/14

Calculating - How much larger is a kilo- than a deka-? 100 times

Volume The amount of space an object takes up

Liter The bottle is 1 liter (L). About equal to 1 US quart.

To measure the volume of smaller liquids, the _________ is used. Milliliter (mL)

The instrument used to measure the volume of liquids is called the… Graduated cylinder.

This instrument has markings that are in increments of… 1 milliliter (mL)

Meniscus The curve in the top surface of water in the graduated cylinder

Figure 4: Observing - What is the proper way to read a meniscus? Read the milliliter marking at the bottom of the curve The meniscus is also known as “the bubble.”

Common Conversions For Volume = 1,000 mL 1 mL 1 cm³

How can the volume of a solid object such as a shoebox be measured? To measure a solid objects that are regular shaped, a formula for volume can be applied To measure a rectangular object such as a shoebox, multiply the object’s length, width, and height

The formula for calculating the volume of a rectangular object is: Volume = Length x Width x Height

Why is the unit cm³ used when calculating the volume of a rectangular object? When multiplying the object’s length, width and height, the cm units are also multiplied cm x cm x cm = cm³

Volume = Length x Width x Height Suppose a cereal box is 10 centimeters long, 4 centimeters wide, and 20 centimeters high. What would be the volume of the box? Volume = Length x Width x Height Volume = 10 cm x 4 cm x 20 cm Volume = 800 cm³

How is the volume of an irregular solid such as a rock measured? To measure the volume of an irregular solid, immerse the object in water, and measure how much the water level rises Water displacement method

How does the water displacement method work? Record the volume of water in the graduated cylinder. Carefully place the irregular solid into the water. Record the volume of the water plus the object. Subtract the volume of the water alone from the volume of the water plus the object.

Mass The measure of the amount of matter an object contains. Matter: The material that all objects and substances are made up of Anything that has mass and takes up space is matter

Mass is measured with an electronic balance. 1/26/14

Figure 3: Observing - What is the mass of this turtle? 153.7 grams

Gram The gold square is 1 gram. About equal to the mass of a large paper clip.

Bigger than the standard Deka = 10 If you had 10 of the gold squares you would have a dekagram of gold.

Bigger than the standard Hecto = 100 If you had 100 of the gold squares you would have a hectogram of gold.

Bigger than the standard Kilo = 1,000 If you had 1,000 of the gold squares you would have a kilogram of gold.

KHDUDCM (King Henry Died Unfortunately Drinking Chocolate Milk) The three units that measure the mass of objects larger than a gram are, … Dekagram Hectogram Kilogram 1/26/14

Complete the table below Prefix Meaning Unit of Length thousand kilogram hecto hundred deka dekagram one gram

Recap There are ________ grams in a dekagram; there are ________grams in a hectogram; there are _______ grams in a kilogram. 1/26/14

Reading Metric Units mg = milligram m is for the prefix milli and g is the standard for gram dkL = dekaLiter dk is for the prefix deka and L is the standard for liter g = gram Gram is the standard for mass.

Temperature- Celsius & Kelvin Take Celsius and add 273 to get Kelvin. The Kelvin scale measures absolute zero.