Lab Equipment
Science as a Process
Science Terms
Controlled Experiments
Random Questions
100
Piece of lab equipment used to measure the volume of liquids.
What is a Graduated Cylinder?
100
An educated guess or proposed explanation that can be tested. Often stated in an "If... Then..." format.
What is a Hypothesis?
100
All claims made in science should be supported by:
What is evidence?
100
A farmer wants to determine if the use of insecticides will increase his crop yields. He decides to apply the insecticides to one field and leave the other field untreated.
Identify the independent variable.
What is the application of insecticides?
100
This term describes how repeatable and consistent your results are, regardless of how close they are to a correct or known value.
What is Precision?
200
The term used to "zero" a scale after placing a container on it before you measure out a chemical or ingredient.
What is Tare?
200
An explanation of why something happens using well established evidence from multiple experiments and observations. Supported by repeated tests and current known facts.
What is a Theory?
200
Type of data that is measured with numbers; example: the temperature of the water.
What is Quantitative Data?
200
A farmer wants to determine if the use of insecticides will increase his crop yields. He decides to apply the insecticides to one field and leave the other field untreated.
Identify the dependent variable.
What is the crop yield?
200
The amount of "space" and object takes up is referred to as:
What is Volume?
300
Name this piece of lab equipment used to measure and transfer liquids:
What is a Pipet?
300
A scientific rule that predicts what will happen. Uses math as a way of explaining what will occur but does not explain why.
What is a Law?
300
Type of data that is in the form of a description and is slightly more subjective; example: color of the water.
What is Qualitative data?
300
A farmer wants to determine if the use of insecticides will increase his crop yields. He decides to apply the insecticides to one field and leave the other field untreated.
Identify the experimental group and the control group.
Experimental group = insecticide field
Control group = untreated field
300
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is:
What is the temperature?
400
When taking a volume measurement in a graduated cylinder, you need to measure from the bottom of the:
What is the meniscus?
400
When conducting a controlled experiment, how many variables can be manipulated within each experimental group?
What is One Variable?
400
This term describes how close a given set of measurements are to their true value:
What is Accuracy?
400
The number of participants or trials in an experiment are referred to as the:
What is the sample size?
400
This term measures the amount of matter contained in a given volume and is often represented in g/mL.
What is Density?
500
Explain how you would determine the density of a marble and what types of lab equipment you would need:
Using a graduated cylinder, you could determine the volume of a marble using displacement. Then you could determine the mass using a scale. Mass / volume = density.
500
What do you call the process where fellow scientists critically examine and evaluate a researchers experiment and results before they are able to publish their findings:
What is Peer Review?
500
Explain what error bars are:
Error bars indicate the amount of uncertainty, or error, that corresponds with a data point or number. They indicate how precise a measurement is and how accurate the data is overall.
500
A harmless pill or treatment that has no affect but is used in an experiment in order for participants to think they may be receiving a treatment (used as a control).
What is a Placebo?
500
Statistical tool used to measure the amount of variation that a set of values have from the mean or average.
What is Standard Deviation?