Slide 1

Today most scientists, in almost all countries use the International System of Units (SI units) as their system of measurement. Unit 1: Nature of Science. Measurement. Reason 1: helps scientists share and compare their data/ results Reason 2: Another advantage of SI units is all units are based on the number 10; meaning they are easily converted from one unit to another

Slide 2

Unit 1: Nature of Science. Measurement. Length: the distance from one point to another Basic SI Unit of length: meter Base unit symbol: m Tool used to measure length: meter stick Basic SI Unit of length: meter Base unit symbol: m Tool used to measure length: meter stick

Slide 3

Volume: The amount of space that matter occupies. VOLUME OF A LIQUID Basic SI Unit of liquid volume: Liter Base unit symbol: L Tool used to measure liquid volume: graduated cylinder VOLUME OF A LIQUID Basic SI Unit of liquid volume: Liter Base unit symbol: L Tool used to measure liquid volume: graduated cylinder Unit 1: Nature of Science. Measurement.

Slide 4

Volume of REGULARLY SHAPED SOLID OBJECTS Basic SI Unit of solid volume: cubic centimeter Base unit symbol: cm 3 Tool used to measure solid volume: meter stick To calculate solid volume: L x W x H Volume of REGULARLY SHAPED SOLID OBJECTS Basic SI Unit of solid volume: cubic centimeter Base unit symbol: cm 3 Tool used to measure solid volume: meter stick To calculate solid volume: L x W x H Unit 1: Nature of Science. Measurement.

Slide 5

Mass: is the amount of matter that something is made of Basic SI Unit of mass: gram Base unit symbol: g Tool used to measure mass: triple beam balance Basic SI Unit of mass: gram Base unit symbol: g Tool used to measure mass: triple beam balance

Slide 6

Volume of an Irregularly Shaped Object Basic SI Unit: cubic centimeter Base unit symbol: cm 3 Tool used to measure volume of irreg. solid: graduated cylinder Volume of an Irregularly Shaped Object Basic SI Unit: cubic centimeter Base unit symbol: cm 3 Tool used to measure volume of irreg. solid: graduated cylinder Unit 1: Nature of Science. Measurement.

Slide 7

Water Displacement method: Volume of liquid after object has been submerged - Original Volume of liquid in grad. Cylinder Answer is volume of irregular solid object (mL = cm 3 ) Water Displacement method: Volume of liquid after object has been submerged - Original Volume of liquid in grad. Cylinder Answer is volume of irregular solid object (mL = cm 3 ) Unit 1: Nature of Science. Measurement. Dora Example 48 mL -44 mL 4mL = 4cm 3 Dora Example 48 mL -44 mL 4mL = 4cm 3

Slide 8

Unit 1: Nature of Science. Measurement. Weight: is a measure of the force of gravity on an object Basic SI Unit of weight: Newton Base unit symbol: N Tool used to measure weight: spring scale Basic SI Unit of weight: Newton Base unit symbol: N Tool used to measure weight: spring scale

Slide 9

Mass DOES NOT change with location, weight DOES! Weight takes into account gravity, mass does not. Mass DOES NOT change with location, weight DOES! Weight takes into account gravity, mass does not. Unit 1: Nature of Science. Measurement. Mass vs. Weight

Slide 10

Temperature: is a measure of how hot (or cold) something is. Specifically, the measure of average kinetic energy of the particles in the object. Unit 1: Nature of Science. Measurement. Basic SI Unit of temperature: Degrees Celsius Base unit symbol: C Tool used to measure temperature: thermometer Basic SI Unit of temperature: Degrees Celsius Base unit symbol: C Tool used to measure temperature: thermometer

Slide 11

Time: the measure of a passing interval, from one event to another Unit 1: Nature of Science. Measurement. Basic SI Unit of time: second Base unit symbol: s Tool used to measure time: stopwatch Basic SI Unit of time: second Base unit symbol: s Tool used to measure time: stopwatch