Notes Science Tennessee SPI Objective: Essential Questions SPI 0807.Inq.2 (Tools and Procedures) Science Tennessee SPI Objective: Select tools and procedures needed to conduct a moderately complex experiment. Essential Questions 1) Which tools and procedures would be best to use when conducting a science experiment?  2) How do I correctly use common scientific tools such as spring scales, triple-beam balances, metric rulers, calculators, graduated cylinders, stop watches, etc. Check for Understanding Identify tools and techniques needed to gather, organize, analyze, and interpret data from a moderately complex scientific investigation.

Scientific Tools In an experiment… …you measure things with the metric system using tools such as: …a spring scale -measures force (weight) -unit of measure: newtons (N)

Scientific Tools In an experiment… …you measure things with the metric system using tools such as: …a graduated cylinder -measures liquid volume and/or -the volume of irregular shaped objects (water displacement method) -unit of measure: milliliter (mL), liter (L) Link (1 min 57 sec): How to Read a Graduated Cylinder Link (3 min 45 sec): Finding the Volume of an Irregular Shaped Object

Scientific Tools When determining the volume of an object… …you can use a metric ruler for regular-shaped solid items. Use this formula: Length x Width x Height -useful for cubes and/or rectangular prisms Link (1 min 7 sec): Calculating Volume of Regular Shapes

In an experiment…you measure things using tools such as: …a triple-beam balance -measures mass -unit of measure: milligrams (mg) , grams (g) , kilograms (kg) Link (2 min 25 sec): How to use a Triple-Beam Balance-Video

Scientific Tools In an experiment…you measure things using tools such as: …a metric ruler or meter stick -measures length -unit of measure: millimeters (mm) , centimeters (cm), meters (m), kilometers (km)

Scientific Tools In an experiment…you measure things using tools such as: …a thermometer -measures temperature -unit of measure: degrees-Celsius (C) or Kelvins (K)

Scientific Tools In an experiment… …you might need to measure the strength of an acid or base -use a pH indicator -unit of measure: pH scale from 0 to 14

Scientific Tools In an experiment… …you might use a galvanometer to measure electrical current -measures both the strength and direction of electrical current Note: To just measure the current you could use an ammeter

Scientific Tools In an experiment… …you also might use… -beakers -test tubes Beakers Measured in ML Used to hold substances Beaker Test tubes Test Tubes No units of measures. Used to mix, heat, and separate substances..

Scientific Tools In an experiment… …you also might use… -goggles -pipette Used for eye protection. No unit of measure Used to pick up or add small amounts of a substance.