Science lab reports

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

• 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.