The Metric System

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# The Metric System - PowerPoint PPT Presentation

The Metric System. Add these notes in your foldable. Length. Basic unit = meter Other units include: Millimeter (mm) used to measure small objects i.e. top of a stick pin Centimeter (cm) used to measure length of paper Meter (m) used to measure soccer fields

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## PowerPoint Slideshow about 'The Metric System' - beulah

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### The Metric System

Length
• Basic unit = meter
• Other units include:
• Millimeter (mm) used to measure small objects i.e. top of a stick pin
• Centimeter (cm) used to measure length of paper
• Meter (m) used to measure soccer fields
• Kilometer (km) used to measure long distances like roads (similar to miles)
• Light years - distance light travels in one year. Used to measure from Earth to other planets
Length continued
• 10mm = 1 cm
• 100 cm = 1 meter
• 1000 m = 1 km
• Kilo/hecto/deka/m,l,g/deci/centi/milli
• Kids have died by drinking chocolate milk.
• Kilo = one thousand
• Centi = one hundredth
• Milli = one thousandth
Temperature
• Basic unit = Celcius
• 2 Fixed points
• 0°C = freezing
• 100°C = boiling
• Other Comparisons

21°C = room temperature

37°C = body temperature

Density
• Basic unit = grams per milliliters (g/mL)
• Density = relationship between mass and volume
• Formula =mass

volume

Density of water = 1 g/mL

Density is less than 1 g/mL = floats

Density is more than 1 g/mL = sinks

Volume
• Basic unit = Liter (L)
• Volume = amount of space an object takes up.
• 3 ways to measure
• 1. Regular Solid = l x w x h = cm3
• 2. Liquid = pour in grad. Cylinder and read proper unit i.e. mL
• 3. Irregular objects = use water displacement method i.e. 200 mL to 220 mL = 20 mL volume
• Units used: mL for liquids or cc/cm3 1cm3=1mL
Mass
• Basic unit = kilogram (kg)
• Mass = measure of amount of matter in an object.
• Units used
• Kg = measure large objects like humans
• Grams= measure small objects like mice
• Ex. Nickel = 5 grams; dollar bill = 1 g
• Mg = measure very little things like crumbs
Mass continued
• Mass is constant; weight is not.
• Mass will stay the same if you go to the moon.
• Your mass on Earth is the same as on the moon.
• Your body mass won’t change if you go to another planet.
Weight
• Basic unit = Newton (N)
• Weight = measure of attraction between 2 objects due to GRAVITY.
• Gravity = force of attraction
Weight continued
• Weight can change on other planets due to different gravitational pulls on each planet.
• For Example:
• Weight on Earth = 60 lbs.
• Weight on moon = 10 lbs. (1/6th)