Créer une présentation
Télécharger la présentation

Télécharger la présentation
## Measuring Length & Mass

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -

**Measuring Length & Mass**By: Brianna Shields September 13, 2005**DO NOW**• Lab Safety Quiz • You have 10 minutes to finish • The five pieces of equipment are on the front counter • Place your quiz on the counter when finished**Definition**Distance between two points Length**Tool**Ruler or meterstick Length**Label units**Centimeter (cm) Length**Tips**Line object up at zero mark Measure with decimals (no fractions) Be accurate Label your answer Length**Example**• What is the length of the object at left?**Example**• What is the length of the object at left?**Definition**Amount of matter in an object Mass**Tool**Triple beam balance Mass**Label units**Grams (g) Mass**Using a tbb**1. Zero the balance (all masses left)**Using a tbb**2. Move 100 g mass first- until balance tips, then slide mass one spot left**Using a tbb**3. Move 10 g mass next until balance tips, then slide mass one spot left**Using a tbb**4. Move 1 g mass last until balance tips, then slide mass one spot left**Using a tbb**5. Add up all three masses to find the total mass**Tips**Be accurate Use decimals, no fractions Label your answer correctly Mass**Example**• What is the mass of the object to the left?**Example**• What is the mass of the object to the left?**Practice**• Work with your lab partner • Complete the length and mass practice questions in your handout • We will go over the correct answers at the end of the period