Download presentation
Presentation is loading. Please wait.
Published byPeregrine Holt Modified over 9 years ago
3
Tuesday, March 23 rd Agenda Finish lab calculations Chapter 8 Jeopardy Review Homework: Finish Chapter 8 Study Guide Finish Chapter 8 Study Guide Chapter 8 crossword Puzzle Chapter 8 crossword Puzzle Chapter 8 Test/Study Guide Due Thursday, March 24 th !
4
Lab Calculations 1.To convert grams to kilograms: a.Divide your number of grams by 1,000 2.To convert centimeters to meters: a. Divide your number of centimeters by 100
5
Lab Calculations 3. To find the average time ball traveled (s): a.Time ball traveled for trial #1 Time ball traveled for trial #2 +Time ball traveled for trial #3 Answer b. Divide Answer by 3 to get average time (s)
6
Lab Calculations 4. To calculate the average speed of the ball (m/s): a.Average speed = length of ramp (m) average time ball traveled (s) average time ball traveled (s) 4.To calculate final speed (m/s): a. Multiply average speed by 2 to get final speed
7
Lab Calculations 5.To calculate final kinetic energy (J): a. Use the equation for kinetic energy KE = ½ X (mass of ball) X (final speed) 2 6.To calculate initial potential energy (J): a. Use the equation for potential energy PE = (mass of ball) X (9.8 m/s 2 ) X (ht of ramp)
8
Defending Your Conclusions Use COMPLETE SENTENCES to answer the “Defending Your Conclusions” section of the lab. Be sure to answer ALL PARTS of the questions, not just a Yes or No…
9
Jeopardy Teams 1B Team #1: Team #2: Team #3: Team #4: Team #5:
10
Chapter 8 Work & Energy
11
THE RULES: There will be 5 teams The host’s decisions are final Each member of the winning team will receive $1 mole money
12
And now…here is the host of Jeopardy… Mrs. Elfline
13
Let’s Get Ready to play… Today’s Categories are:
14
Definitions
15
Simple Machines Simple Machines
16
Critical Thinking Critical Thinking
17
Calculations
18
Word Puzzles Word Puzzles
19
$100 $200 $300 $400 $500 Definitions $100 $200 $300 $400 $500 Simple Machines $100 $200 $300 $400 $500 Critical Thinking $100 $200 $300 $400 $500 Calculations $100 $200 $300 $400 $500 Word Puzzles FJ
20
A quantity defined as force X distance Answer…
21
Work 100
22
Power is calculated by dividing work by Answer…
23
Time 200
24
The ability to do work defines Answer…
25
Energy 300
26
The sum of the kinetic and potential energy of large-scale objects in a system is called Answer…
27
Mechanical Energy 400
28
The ratio of useful work output to work input is a measure of The ratio of useful work output to work input is a measure of Answer…
29
Efficiency 500
30
Answer… What are the 2 families of simple machines?
31
100 Lever and Inclined Plane
32
Answer… Levers are divided into how many classes based on the location of the fulcrum?
33
3 200
34
Where is the fulcrum in a 1 st class lever? Answer…
35
In the middle of the rigid arm. 300
36
What is the mechanical advantage of a single, fixed pulley? Answer…
37
1 400
38
What class of lever is a bicep muscle? Answer…
39
3 rd class 500
40
A boy pushes on a parked car with a force of 200 N but the car does not move. How much work does the boy do on the car? Answer…
41
0 (No work is done unless the object moves) 100
42
A quantity that measures how much a machine multiplies force or distance is called Answer…
43
Mechanical Advantage 200
44
What is the ability to do work called? Answer…
45
Energy 300
46
Gravitational potential energy depends on the: a. Mass of the object b. Height of the object c. Acceleration due to gravity d. All of the above Answer…
47
d. All of the above 400
48
What is the primary source of the sun’s energy? Answer…
49
Nuclear Fusion 500
50
A boy uses a force of 65 N when he lifts a box 1.2 meters. How much work does he do? Answer…
51
78 J 100
52
How much power is needed to do 180 J of work in 2.4 seconds? Answer…
53
75 watts 200
54
What is the gravitational potential energy of a 55 kg box that is 8.0 meters above the ground? Answer…
55
4,312 J 300
56
A ball has a mass of 5 kg and is thrown with a speed of 2 m/s. What is the kinetic energy? Answer…
57
10 J 400
58
What is the efficiency of a ramp with a work input of 240 J and a useful work output of 180 J? Answer…
59
75 % 500
60
Answer…
61
I’ll Get Over It 100
62
Answer…
63
Square Dance 200
64
“ Answer…
65
Scrambled Eggs 300
66
“ Answer…
67
What’s Up With That? 400
68
“ Answer…
69
Some Are Over Worked and Under Paid 500
70
Daily Double How much do you want to wager? Daily Double Daily Double
71
FINAL JEOPARDY
72
CATEGORY: Word Puzzles How much do you want to wager? Proceed…
74
A Step Backwards Proceed…
75
Thanks for PLAYING!
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.