Lab Safety
What is the purpose of wearing lab safety goggles?
To protect your eyes during experiments.
What graph would you use to show temperature change over a period of time?
A line graph.
What is the purpose of an experiment?
To test your hypothesis.
What is data in a scientific experiment?
Data is the information or observations collected during an experiment. It can be numbers, measurements, or descriptions.
What causes the ocean tides?
The moon's gravity.
What is the very FIRST THING YOU SHOULD DO if you spill a chemical in the lab?
Tell the teacher right away. Don’t try to clean it up yourself unless the teacher tells you it’s safe.
If a bar graph shows the height of different plants, and one bar is much taller than the others, what does that mean?
It means that plant grew taller than the others. The height of the bar shows how much or how tall something is.
Fill in the blank: A hypothesis is ALWAYS written as an ______, ________ statement.
If, then
Fill in the blank: The independent variable is the variable that is ____________ in an experiment, while the dependent variable is ______________.
changed; measured
What are the three states of matter?
Solid, liquid, and gas.
What is lab safety?
Rules and procedures put in place to ensure that labs run smoothly and safely.
Fill in the blank: When graphing, the x-axis always represents the _______________ variable and the y-axis represents the ________________ variable.
independent; dependent.
What is a hypothesis?
A testable prediction about what you think will happen in an experiment.
What is qualitative data?
Data that is based on your 5 senses.
What did we MEASURE in our Sweet Skittles Lab?
Color frequency.
Why should you never eat or drink in the science lab?
Because chemicals could accidentally get into your food or drink and make you sick.
Fill in the blank: If we are making a graph to document "Weekly Growth of a Plant," I should use a _________ graph.
What should you do after you finish your experiment and collect your data?
You should analyze the data and draw a conclusion to see what the results mean and whether your hypothesis was right.
What is quantitative data?
Data that is based on numbers.
What is an ecosystem?
A community of living things and their non-living environment interacting together.
You finish your experiment early and want to help clean up. You see an open container with a chemical inside but no label. What should you do?
Do not touch or move the container. Tell the teacher right away.
What does it mean if a line on a graph goes straight across without going up or down?
It means that there was no change in the data. Whatever was being measured stayed the same over time.
List the steps of the scientific method.
Observe, Question, Hypothesis, Experiment, Collect/Analyze Data, Conclusion.
What is a controlled variable?
A variable that is kept the same during an experiment.
What is the process called when water changes from a liquid to a gas?
Evaporation.