1. Weekly Bell-Ringer
August 31-Sept 4, 2015

2. Monday, August 31, 2015 Look at the image, make a list of all the safety violations.

3. Tuesday, September 1, 2015 Answer the following questions.
1. The result of a scientific experiment is PROBABLY valid if -
A most people believe the result is correct. B repetitions give consistent data.
C it is based on a hypothesis D it is done by a world-famous scientist.
2. During a laboratory exercise, a student bumped the table where chemicals were
being held. The storage containers tumbled over, and the different liquids spilled
onto the table. What is the FIRST thing that other students should immediately do?
A Wipe up the liquid with paper towels B Set the containers upright.
C Dilute the spill with water D Tell the teacher what has happened.
3. Drug manufacturers must test their new products before they can be marketed. A pill containing a new drug was given to participants in Group A. A pill containing NO drug was given to the same number of participants in Group B. In this test, the drug given to the participants in Group A was the -
A conclusion B hypothesis C dependent variable D independent variable.

4. Wednesday, September 2, 2015 Answer the following question
Wednesday, September 2, 2015 Answer the following question. Find the dependent and independent variables.
A scientist wants to determine how water temperature affects the development of fish eggs. Which of the following would be an appropriate control group for such an experiment?
A Ice is added to the water of one group of fish eggs and the tank is covered.
B One group of fish eggs and water is placed in a sunny window.
C The water of one group of fish eggs is kept at the same temperature as would be found in nature.
D The water of one group of fish eggs is kept at the same temperature as would be found in
nature and the tank is covered.

5. Thursday, September 3, 2015 Answer the following questions.
1. The chart shows the average change in mass of some bears during a period of estivation. If this trend continues, what will be the average mass of the frogs by the twelfth week of estivation?   
F 424 kg G 422 kg
H 420 kg J 418 kg
2. What were scientist attempting to identify?
3. Draw a conclusion using the data chart provided.
Week
Average Mass After Estivation (kg)
450 3
442 6
434 9
426 12
?????

6. September 4, 2015
Beat those Bulldogs!! FREEWRITE FRIDAY!!! (Remember to write at least 5 complete sentences)