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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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The Metric System

Add these notes in your foldable.

• 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

• 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

• Basic unit = Celcius

• 2 Fixed points

• 0°C = freezing

• 100°C = boiling

• Other Comparisons

21°C = room temperature

37°C = body temperature

• 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

• 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

• 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 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.

• Basic unit = Newton (N)

• Weight = measure of attraction between 2 objects due to GRAVITY.

• Gravity = force of attraction

• 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)