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BELL RINGER……

Ian conducted an experiment to determine if using buttermilk instead of ordinary milk in a cake batter would result in a higher rise. The height of the cakes was measured after baking. This experiment explores the control, independent variable, and dependent variable.

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BELL RINGER……

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  1. BELL RINGER…… • Ian wanted to find out if buttermilk makes a cake rise higher. He mixed two identical batches of cake batter using the same recipe, except he put ordinary milk in one and buttermilk in the other. After baking equal amounts of batter at the same temperatures and for the same period of time, Ian measured the height of the cakes. • What was Ian’s controls in this experiment? • What was the independent variable? • What was the dependent variable?

  2. BELL RINGER… • What unit would you use when measuring a liquid volume? A solid volume, such as a cube, rectangle, sphere, etc… • What unit would you use when measuring length? • What equipment would you use to measure mass?

  3. Converting in science

  4. Converting in science… • Sometimes in science, it is necessary to convert from one unit to another • Can occur between different metric units • Meter to centimeter • Liter to milliliter • Kilogram to gram • Can occur between different English units • Can occur between Metric and English units • This can be accomplished by doing the factor-label method OR dimensional analysis

  5. Factor-Label method… • Uses the premise of canceling units based on equivalent values between two units • Common English Equivalents: • 4 quarts = 1 gallon • 32 ounces = 1 quart • 12 inches = 1 foot • 16 ounces = 1 pound • Common Metric Equivalents: • 1 m = 100 cm • 1 m = 1000 mm • 1km = 1000m OR .001 km = 1 m Meter (m) in each of the equivalents above can be replaced with liter (L) or gram (g)

  6. Converting in english… • How many yds are in 23 ft? • How many ounces are in 48 pounds? • How many quarts are in 3.2 gallons? • How many days in 2.5 years? • How many seconds in 1 week?

  7. Converting in metric… • How many km are in 50 m? • How many mL are in 2.3 L? • How many cg are in 4.3 g?

  8. Going a little further • How many kL are in 13.6 mL? • How many cg are in 89.7 mL? • How many cm are in 0.576 km?

  9. Bell Ringer… • How many inches are in 4.56 cm? • How many mL are in 0.943 kL? • How many ounces are in 2-L of soda?

  10. Bell Ringer • How many inches are in 52 ft? • How many quarts are in 24 gallons? (4qts = 1 gal) • How many miles are in 53426 in? (1mile = 5280 ft)

  11. Test on Friday… • The test will cover the following information • Scientific Method – know how to identify controls and variables, even on graphs and data tables • Lab Safety – know the rules • Lab Equipment – know what the equipment we have used is and how to properly measure with it • Conversion – metric to metric, English to English, and metric to English

  12. Temperature conversion… • In science, temperature is either measured in degrees Celsius (°C) or kelvin (K) • Due to this, we need to be able to convert between degrees Fahrenheit (°F) degrees Celsius, and Kelvin (K)

  13. How to convert temperature… • °F to °C °C = 5/9 (°F - 32°) • °C to °F °F = 9/5(°C) + 32° • (°C) to K K = °C + 273

  14. Try a Few… • 62 °F to °C • 216.7 °C to °F • 233 °C to K • 315 K to °C • 315 K to °F

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