Chap 11 Conceptual Physics review

1. Form into the designated groups

2. Take out one full sheet of paper per group and list the name of the group at the top. Then list the names of the group members and place numbers next to each name (1, 2, 3…..If four members then write 4 also). It doesn’t matter who gets what number.

3. Hand the paper to the instructor. It will be used for assessment and graded.

4. Begin reviewing/ learning the listed concepts. Make up sample questions related to the concept. Try and figure out what question the teacher will ask. Time is limited; so don’t waste it!

5. Once you understand the concepts make sure each group members also understand by assessing them. Do not ask yes or no assessment questions.

Good Assessment. “Sam, could you show me how to do number three on the list?”

Poor Assessment. “Do you guys all know it?”

6. When the instructor calls a number randomly (ex. = 3) the three will go to a designated area alone and respond to a similar question. Make sure they have something to write with and a calculator. After they leave begin studying the next set of concepts for the next round.

7. After a short amount of time the person will then return to the group and their answer will be graded by the teacher and given to the entire group as a communal score.

8. The returning group member may be called again so they should receive extra instruction to help get caught up.

9. The scores are added at the end to determine winners. The top three groups receive extra points on the test.

Chap 11 conceptual Physics Concepts

1. define torque
2. Calculate torque with units
3. Know ways to maximize torque on a stuck bolt or screw
4. How to make an object rotate when kicked or punched
5. Definition of rotational inertia
6. Difference in rolling speed between a tire and a solid disk of the same size and mass and how it relates to rotational inertia
7. Rotational inertia with short legged dogs and long legged dogs
8. How to make rotational inertia small?
9. Definition of angular momentum
10. Calculate angular momentum with units
11. Conservation of angular momentum for:
a. satellite motion around a planet
b. ice skater legs being tucked in


12. rotational speed vs angular speed
13. What is a cam? What is varying in a cam?
14. How to avoid falling in terms of rotational inertia

Marshmallow Catapult Description and Rubric

Marshmallow Catapult Competition


Objective: Construct a catapult that throws standard marshmallows as far as possible using only gravitational potential energy (GPE)

Value: 120 points in project category

Description: This is a performance assessment, meaning the your grade will be based on how your project does, not on how hard you worked. This is an individual project, with no partners. The only source of energy for the catapult is a falling weight that you provide. The weight may be made of any material including water, sand, iron, lead, etc. The entire project must fit in a box 18” X 9” X 12”, stowable in your locker. Projects that do not fit in this box will receive deductions of 2 percentage points for every inch beyond the specification. Example, a 20” long project would lose 4 points from the final grade. The projects will be tested in the science wing hallway, which has a ceiling height of 9 feet.

The use of elastic bands, springs, rockets, chemical energy or anything else that adds energy to your projectile will disqualify your project and result in a grade of “F”.

Deadlines:

10 pts Diagrams (overhead and side) with desc. and dimensions: Th, Feb, 16

10 pts Materials Due for two day building session: W, Feb, 22

Final Project Due: W, April 4


Grade Rubric for Performance Assessment

D = 10-12.99 meters

D+ = 13-14.99 meters

C- = 15-16.99 meters

C = 17-18.99 meters

C+ = 19-20.99 meters

B- = 21- 23.99meters

B= 24- 27.99 meters

B+ = 28-29.99 meters

A- = 30 -32.99meters