Lab Reports

**Can't judge a Powder**

- Title
- observations
- unknowns identified and explain
- answer questions about popcorn and explain

**Bottle Flipping lab**

- Title
- question
- hypothesis
- variables identified (including those held constant)
- data table
- mean, median, modes of each volume
- conclusion statement

**Graphing data: (title)**

Candy-

- make predictions
- data table
- graph
- conclusion: did results support predictions?

Density (practice with sig figs and graphing)

- answers to questions (hypothesis)
- variables identified
- data collected (possibly in a table) for masses and volumes of water.
- graph
- calcuate densities of water for each volume and determine the average density
- calculate percent error (just use average value)
- conclusion statement: Were predictions correct, accuracy statement for the water's density. Sources of error.
**All density calculations and measurements should use sig figs.****Answer any questions on lab w.s**

Blood spatter

- Answer questions-hypothesis
- Identify variables
- data table with height, diameter, description, and diagram of blood spatter.
- graphs
- prediction of unknown height using graph.
- hall blood spatters: state direction of motion and which is fastest, slowest, explain your reasoning
- Background information (see links for information on blood spatter). Make
- sure to answer questions given in class. The links are on the links tab to
- the left. There is an article (read pages 1-5).
- Conclusion: Evaluate the experiment, is this a good way to test for unknown
- heights of blood drips, how could we make experiment better? Were you
- accurate? sources of error. Answer any questions in instructions.

Hexabug lab- fill out paper

Creek analysis (flow rate-discharge rate)-fill out paper

Friction lab:

Title

prediction

datat table with forces of friction

conclusions

Hot wheel labs

Title

hypothesis

Identify variables (manipulated, responding, and factors to hold constant

Results in a data table (measurements/calculations)

2 graphs (bar graph of averages distances, line graph of average speeds)

Conclusions: do results support your hypothesis, sources of error, answers

to questions.

Astronaut Bob lab:

Purpose

Identify variables

data collected mass and times

data analysis: average time and line graph of time vs. mass

determine astronaut bob's mass

When given actual mass,determine % error

Conclusion: accuracy statement sources of error

scooter lab:

Title

predictions

data collected

average distances calculated

bar graphs of average distances

answer to post lab questions, sources of error

Bungee Barbie

Title

purpose

Procedure

data collected (measured)

data analysis (proportions and graph)

conclusion statement which should include sources of error

Chemistry lab:

title

purpose

procedure (key word)

observations

determine if chemical or physical change; if chemical state evidence

Creek analysis

data measured

overall quality calculations

Extrusive vs intrusive rock formation lab

title

purpose

identify variables

procedure

data collected, time measured, observations

answers to questions (you do not have to write out the questions)

Rocket lab:

Rough design and the final design (on graph paper, neatly drawn using

straight edges).

Data collected: times, angles

Data analysis (calculations): Average time, average angle, determine height

using the tangent of the average angle.

Motion lab:

Purpose

variables on 1,2,and 4

derviation of gravity equation (in pendulum lab)

Procedure: part 1,2,3, and 4

data collected (preferably in data tables): Part 1: times for each walk and

average speed

Part 2, three times for each trial and averages

part 3: 4 times

Part 4: lengths and three times (for each length)

Calculations/graphs: part 1- average speed: 10/time, line graph for each

person

part 3: 4 average speeds, 4 final speeds, and 4 accelerations

part 4: 4 average times, 4 gravities, average gravity, s.d for gravity, %

error

conclusions: Possible sources of error, accuracy and precision statementsfor

gravity

Calorimetry lab (specific heat of metals)

title

purpose

variables identified

procedure

data measured

calculations (calculate specific heat of your metals)

The specific heat of aluminum is 0.22 cal/g C, copper is 0.092 cal/g C

% error

conclusion statement: accuracy statement and sources of error should be

included.