Get Ready for Bellwork Have your bubble sheet out and an expo marker!

1.

3000mg = _____________g 3g 30g .3g 30000g

Two students want to test how the amount of salt on McDonald’s french fries affects the blood pressure of 8th grade boys and girls that eat them. They conduct three trials with 5 boys and 5 girls. On the following day with the same 10 students, they repeat the experiment over, but this time they make sure that the french fries do not have any salt on them at all. What is the control experiment in this situation? a. Doing a completely different experiment about cheeseburgers b. Doing the experiment with extra salt on the french fries c. Doing the experiment with 10 students (5 boys and 5 girls) d. Doing the experiment without any salt on the french fries.

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5. The NASA engineers that designed the rockets that took our astronauts to the moon had to consider the mass of all the material that went into the construction of the rockets. They also had to consider the distance from Earth to the Moon. Which SI (metric) units did they use for the rocket mass and which SI (metric) unit did they use for the distance? a. kilograms for the mass and kilometers for the distance b. pounds for the mass and kilometers for the distance c. Kelvins for the mass and Newtons for the distance d. grams for the mass and meters for the distance

6. In the wall – sit experiment performed in class last week for the Science Fair Project, which of the following would be considered a bias or error? The same boy and girl perform the test 3 times. One of the participants puts their hands on their legs. Who stays in the wall-sit position the longest. They do the same exercise.

a. Give the supplement to both groups for only 30 days 7. A calcium supplement designed to make bones stronger was given to two groups of people during a scientific study as displayed in the table below After 60 days, all the people had their bone density tested and the results appeared to show that their bones were marginally stronger. However they neglected a key task when they did their experiments. Identify the key task that they did not do. a. Give the supplement to both groups for only 30 days b. Test only one group with 100mg of the supplement c. Create a third group that receives 75mg of the supplement d. Create a third group (a control group) that does not receive the supplement Dosage Group 1 30 mg each day Group 2 60 mg each day

Get ready for me to check your bell work. Video! Measuring Matter

1.

3000mg = _____________g 3g 30g .3g 30000g

Two students want to test how the amount of salt on McDonald’s french fries affects the blood pressure of 8th grade boys and girls that eat them. They conduct three trials with 5 boys and 5 girls. On the following day with the same 10 students, they repeat the experiment over, but this time they make sure that the french fries do not have any salt on them at all. What is the control experiment in this situation? a. Doing a completely different experiment about cheeseburgers b. Doing the experiment with extra salt on the french fries c. Doing the experiment with 10 students (5 boys and 5 girls) d. Doing the experiment without any salt on the french fries.

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5. The NASA engineers that designed the rockets that took our astronauts to the moon had to consider the mass of all the material that went into the construction of the rockets. They also had to consider the distance from Earth to the Moon. Which SI (metric) units did they use for the rocket mass and which SI (metric) unit did they use for the distance? a. kilograms for the mass and kilometers for the distance b. pounds for the mass and kilometers for the distance c. Kelvins for the mass and Newtons for the distance d. grams for the mass and meters for the distance

6. In the wall – sit experiment performed in class last week for the Science Fair Project, which of the following would be considered a bias or error? The same boy and girl perform the test 3 times. One of the participants puts their hands on their legs. Who stays in the wall-sit position the longest. They do the same exercise.

a. Give the supplement to both groups for only 30 days 7. A calcium supplement designed to make bones stronger was given to two groups of people during a scientific study as displayed in the table below After 60 days, all the people had their bone density tested and the results appeared to show that their bones were marginally stronger. However they neglected a key task when they did their experiments. Identify the key task that they did not do. a. Give the supplement to both groups for only 30 days b. Test only one group with 100mg of the supplement c. Create a third group that receives 75mg of the supplement d. Create a third group (a control group) that does not receive the supplement Dosage Group 1 30 mg each day Group 2 60 mg each day

Can I? Use appropriate tools and procedures Identify variables Use the Scientific Method TOC # 8 Measurement foldable

Video! Measuring Matter

Measurement Foldable Length Mass Area Density Volume Temperature 1. Fold construction paper in half like a hamburger bun 2. Unfold the construction paper 3. Fold the two sides in to the middle until they touch. Divide the front 2 flaps into 3 equal parts for each flap Label each of the 6 flaps as shown Front of Foldable Length Mass Area Density Volume Temperature

Inside Foldable Tool Definition Formula Units

Length

Area Tool: Ruler Definition: How much surface an object covers. Formula: A= lxw Units: Square meters (m2)

Volume

Mass

Density

Temperature

Tape or glue this to a sheet of paper in your SNB TOC # 8 Measurement foldable