BELL WORK 8/25/2017 Get your comp. book! Turn in your homework to the tray! Then, quietly review notes from yesterday.

Write in your agenda: TEST on WEDNESDAY!

Explain what this picture means to your neighbor.

I am confident that I can… Identify different lab tools. Know what lab tools measure. (Ex: mass) Know the SI units for length and mass. Know how to read measurements from a triple-beam balance, graduated cylinder, and ruler. List the steps of the scientific method. Make a bar graph. Write an If-Then hypothesis. Identify the control in an experiment. Identify the independent and dependent variables in an experiment. Tell if bias is present in an investigation.

What is the name of the following lab tools? Graduated Cylinder Triple-Beam Balance

What do the following measure? Triple-Beam Balance Mass Graduated Cylinder Volume

Which of the following is in order? Ask a question, test the hypothesis, form a hypothesis Test the hypothesis, analyze the results, draw a conclusion Ask a question, communicate the results, form a hypothesis Draw a conclusion, communicate the results, analyze the results

Mr. Jones wanted to see if different colored light bulbs would affect plant growth. His ivy usually sits on his kitchen cabinet under a clear (white) light. He placed another ivy plant under a blue light and another one under a red light. After two weeks, he noticed that the ivy under the white light grew 10 cm, the one under the blue light grew 4.3 cm, and the one under the red light grew 6.6 cm. What is the control? What is the independent variable? What is the dependent variable? White Light Light Color Height

Sally wanted to see if her new sun tanning lotion would cause her to tan quicker. What is the independent variable? New Lotion

Which of the following is an example of a procedure? If I run more, then I will lose weight. Running did cause me to lose weight. First, lace up your shoes. Next, find a good spot to run. Then, start jogging. Will running cause me to lose weight?

A student wants to test if giving dogs a toy to play with makes their tails wag more. He gives toys to one group of dogs, while another group of dogs does not get toys. He counts the number of times each dog wags their tail.

Mrs. Stoecker wants to know if giving teachers candy will make them smile more. She gives half the teachers candy and the other half get nothing. She records the number of times the teacher smiled.

A scientist thinks that ducks swim faster when they are in cold water A scientist thinks that ducks swim faster when they are in cold water. He tests two groups of ducks, one in cold water and one in room temperature water. He records how fast they swim.

Some teachers think students learn best in rooms with carpet Some teachers think students learn best in rooms with carpet. They teach the same lesson, but one class is in a carpeted room and the other is not. They give a test and compare the scores.

One tank of goldfish is fed the normal amount of food once a day, a second tank is fed twice a day, and a third is fed four times a day for three weeks. The fish’s weight is recorded daily.

You have two sunflower plants You have two sunflower plants. One receives salt water daily, and the other receives pure water daily. They are both receiving the same total liquid. After a two week period, the height of each sunflower is measured.