Earth Space Science

Pradhan

Monday 9/23

15 mins Take the mass of four objects using a triple beam. Use 6 inch voices.

The most accurate pair will get swivel chair for a day.

10 mins Instruction and demo15 mins Triple beam analysis questions 10 mins Exit: Measuring

Measuring Mass Practice

Measure the mass of the objects to the nearest gram using a triple beam balance.

Name of Object Mass of Object (g) #1

#2

#3

#4

Triple Beam Balance Analysis QuestionsPart A. Labeling a Diagram

• Label the following parts of the triple beam balance shown below: beams, riders, pan, indicator/zero mark, balance nut, and pointer.

Part B. Short Answer Questions*Answer the following questions using complete sentences.

1. What is the largest total mass that you can measure in grams using a triple beam balance? 2. What are three things that you need to do when preparing your triple beam balance for use?3. Why do you need to “zero” your triple beam balance before you place on object on the pan to measure? What could happen to the accuracy of your measurements if you do not?4. Think back to the measuring mass activity during today’s class. Which object had the largest mass in grams? What was the mass in grams?5. Think back to the measuring mass activity during today’s class. Which object had the smallest mass in grams? What was the mass in grams?6. What was the easiest part of using the triple beam balance? What was the most challenging part?

Exit Slip

• Measure the mass of 5, 10 and 15 pennies using a TBB.

Tuesday 9/24

1. Demo- soap and syrup2. Density cards 3. Demo- clay4. Density questions5. Density cards 6. Exit

Exit Slip 9/24

• Will OBJECT sink or float in water? Explain your answer.

9/25

• ACT Passages• Study Guide

Study Guide

Please convert the following numbers correctly into scientific notation 1) 28,000,000 2) 0.000000463 3) 3,010,000 4) 0.000000000000057 5) 0.00025

Please convert the following numbers in scientific notation back into regular notation 6) 8.54 x 105 7) 2.101 x 10-8 8) 3.051 x 107 9) 5.94 x 10-3 10) 3.86 x 102

9/26

1. Do Now2. SyNote Rap3. Scientific Notation Notes4. Suggest Numbers5. Practice

SyNote Rap

• http://www.youtube.com/watch?v=HtXTKrigYqk

Scientific Notation Notes

Adding/Subtracting Scientific Notation

1. Convert all numbers to the power of the largest number.If you make an exponent larger by 1, you must make the number smaller by moving the decimal and vice versa.

6.02 x 1023 + 3.2 x 1022

6.02 x 1023 + 0.32 x 1023

2. Do the math to the numbers(don’t forget sig. figs.!)

6.02 + 0.32 = 6.34

3. Simplify Number (must be between 1 and 10) if needed.

Ans. 6.34 x 1023

Multiplying/Dividing Scientific Notation

1.Multiplication – multiply numbers and add exponents

5.0 x 103 x 2.0 x 104

10 x 107

2. Division – divide numbers and subtract exponents

4.80 x 10-6 / 4.00 x 10-2

1.20 x 10-4

3. Simplify Number (must be between 1 and 10) if needed.

Ans. #1 = 1.0 x 108

Ans. #2 = 1.20 x 10-4

Writing Scientific Notation from Decimal Numbers

Suggest Numbers

• What is the distance to the sun?• How much does your favorite basketball

player make in year?

9/26 Scientific Notation PracticeFor help with this sheet, please look in the Earth Science TextBookPlease convert the following numbers correctly into scientific notation

EX.) 602 200 000 000 000 000 000 000 6.02 x 1023

1) 28 000 000 2) 305 000 3) 0.000 000 463 4) 3 010 000 5) 0.000 000 000 000 057 6) 20 100 7) 0.000 25

Please convert the following numbers in scientific notation back into regular notation EX.) 4.30 x 10-4 0.00043

9) 8.54 x 105

10) 2.101 x 10¯8

11) 3.051 x 107

12) 5.94 x 10¯3

13) 8.27 x 10-9

14) 3.86 x 102

15) 2.511 x 107

17) 3.21 x 108

18) 2.88 x 100