dos and don'ts of science communication
DESCRIPTION
Wall display or presentation on science communication for high school studentsTRANSCRIPT
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The Dos and Don’ts of Science Communica4on
A wall display or presenta4on for students of all ages.
By Chris Paine
h?ps://bioknowledgy.wikispaces.com/
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thing it Whatever you are talking about be it an organism, substance, process, it has a
Use the correct term or you may not be understood.
name ✔
stuff
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kill die Only organisms and cells can ‘die’. If it’s not alive you can’t kill it.
dead
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the enzyme has been denatured enzymes
nutrients into small soluble molecules
breakdown
The immune system viruses destroys
✔
✔
✔
You probably meant to say:
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amount • Mass • Length • Volume • Concentration • Time
✔ ✔ ✔
✔ ✔
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got bigger … increased in: • Mass • Length • Volume • …
✔ n.b. always use a qualifier, what increased?
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the line went up Positive correlation
✔ Did you mean to say that the graph shows …
“As the concentration of starch increased so did the rate of reaction”
Give a specific example as well:
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Repeats =
Reliability
(or an increase in sample size)
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Accurate =
How close to the true value your measurement is. For example a pH meter is more accurate than pH paper.
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Precision =
If you repeat your test are you likely to get the same, or almost the same result? If so it is a precise measure.
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“Using the information in the table …”
Use or refer the information in the table to when answering the question
means
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Draw means draw AND
label • Use a pencil • Use a ruler for label lines – no arrows • Draw outlines – don’t shade
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change Whatever you are talking about a change you need to iden4fy whether it’s …
increase ✔
decrease ✔
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Get the same person to do measure the experiment each time
Change the method so anyone can take the measurements
If people judge the results differently it’s because the method is not rigorous enough
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“I poured 25cm3 of water into the beaker”
Add 25cm3 of water to the beaker
All scien4fic wri4ng, especially the method, should be done in the third person, i.e. the passive voice
✔
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Independent Variable
= Is the factor you are investigating. When discussing it you are going to: • Change it • Manipulate it • Control it
✔ ✔
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Control Control Variable
Is an experiment in which the independent variable is not present. It is used to provide evidence that the independent variable is causing the observed effect. For example if tes4ng how effec4ve a drug is at trea4ng an illness then the control group would not be given the drug.
= Is a variable that remains unchanged or is held constant to prevent it effec4ng the outcome of the inves4ga4on, i.e. to keep it a fair test.
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1. Collect all the equipment
Not needed. You have already men4oned the apparatus list earlier in the method and it’s obvious you will collect the equipment before you use it.
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“The nucleus is the brain of the cell” “The nucleus contains genetic information and controls the activities of the cell.” ✔
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To improve the investigation I would use a … • Machine • Robot • Electronic meter
Use a correct name and state how it would be used ✔
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Speed Velocity
Speed is a measure of how fast an object is moving. It is measured in metres per second, wri?en as m/s.
= Velocity is similar to speed. It is also a measure of how fast an object is moving and is measured in m/s. The difference between velocity and speed is that velocity is speed in a certain direc5on.
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Heat (thermal) energy Temperature
The amount of heat energy that a something has does depend on its mass. If you double the mass, you must double the heat energy to heat it to the same temperature.
= Temperature is a measure of the kine4c energy of the par4cles (the faster they are going, the ho?er they are). Temperature does not depend on the mass of the substance (how many par4cles there are).
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Mass Weight
Mass is just a measure of how much ma?er a body has. For this reason, your mass is the same on Earth or the Moon, or even in space. It’s measured in grams or Kilograms.
= Weight is the force due to gravity ac4ng on a mass. It is measured in Newtons weight (N) = mass (kg) × gravity (N/kg)
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substance • Ion • Element • Compound • Molecule • Mixture • Alloy
✔ ✔ ✔ ✔
✔
✔ Even be?er give the name of the element, alloy etc.
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Respiration happens in cells
Breathing happens in the lungs
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CO2 ✔ CO2
When wri4ng chemical formula be careful that you use the right nota4on, subscript and superscript where appropriate.
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Measuring scale ✔ Balance
Each piece of equipment has a correct name, use it.
Spoon ✔ Spatula
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“The reaction got faster”
“The rate of reaction increased” ✔
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“The amps went up” “The current increased by 1.5 amps”
✔
Change should be talked about in terms of the quan4ty not the unit of measure
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10 Newtons
10 newtons ✔ 10 n 10 N ✔
If a unit is named a`er a person when wri?en in full it is not capitalised, if abbreviated then it is.
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10 Grams
10 grams ✔ 10 G 10 g ✔
If a unit is not named a`er a person when wri?en in full it is not capitalised in full or when abbreviated
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Rate =
Speed
A rate measurement is of a quan4ty or change happening in a given 4me period. The unit should always include 4me, e.g. “per sec” or “per hour”
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All graphs need …
0.0##
10.0##
20.0##
30.0##
40.0##
50.0##
60.0##
0# 0.2# 0.4# 0.6# 0.8# 1# 1.2#
y,axis#labe
l##(u
nit)#
x,axis#label#(unit)!
#The#effect#of#[x,axis#label]#on#[y,axis#label]#
x-axis label is often a description of either the independent variable or a measure of time
The graph title, as a minimum, should refer to both axis labels. The y-axis is a description
of the results, it is often the dependent variable
Data points should be marked either by x or +, but not dots
Unless stated otherwise a best fit line/curve should be drawn to describe the trend. The line should: • Go through the
middle of the data points (gaps above = gaps below)
• Start inline with the smallest x-value and extend no further that the largest
• Does not have to go through 0, 0
The scale on both axis should be regular, e.g. each small interval between gridlines on the y-axis should have the same value
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Straight line It is a straight line but is it … • Vertical? • Horizontal?
It is a straight line, but does if have … • Steep gradient? • Shallow gradient?
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Comparing trends When comparing trend lines on a graph use the same x-axis value and quote/discuss the difference in the y-values: “when the temperature is at 25 then the enzyme activity of green is greater (12 units) than that of of blue (7 units) by 5 units.”
✔
25
12
7
Temperature (oC)
Enzyme ac4vity (arbitrary units)
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Particle diagrams ✔
solid
liquid
gas
Should have the same number of par4cles as a solid, just as closely packed, but randomly arranged to show that it is fluid
Fewer par4cles, random placed to show the very low density
Par4cles need to be touching and in a repea4ng arrangement.