Daily Science Aug. 30-Sept.3

1. Daily Science Aug. 30-Sept.3

2. Monday, Aug. 30 • A student places several coins on a toy train. He then pushes the train toward a wall to observe what happens to the coins due to their inertia. The student investigates how the motion of the coins is related to the speed of the train by pushing the train faster each time. • 1. What is the independent variable? • 2. What is the dependent variable?

3. Tuesday, Aug. 31 • Vince conducted an activity to test the effect of temperature on the reaction between iodine and Vit. C. He obtained 3 identical solutions of Vic. C and water. One solution was chilled to 8 degrees C, another was held at room temperature and the 3rd was at 70 degrees C. He then added 3 drops of iodine to each solution and observed any changes. • Identify the independent and dependent variables. Identify a control variable.

4. Wednesday, Sept. 1 • Bob wanted to know if different colors of light changed the rate of photosynthesis in plants. • What is the independent variable? • What is the dependent variable?

5. Thursday, Sept. 2 • Write the answer on your paper. • 1. Measure of how much matter an object contains • 2. What is an element? • 3. Amount of space matter takes up DS Quiz #2 will be Friday, Sept. 3