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WorksheetsLab Safety and Scientific Method
Total questions: 45
Worksheet time: 51mins
Pranks, jokes, and messing around are not allowed in the class and lab
True
False
Should I throw things in class?
Sometimes
Never
Always
Only when the teacher isn't looking
If you are unclear about instructions or the procedure, you should_________
Just sit there and do nothing
Try and do the experiment anyway
Ask the teacher for clarification
When there are supplies/equipment on the back counter or lab tables, I should......
Mess with them
Move them
Break them
Wait for instructions from the teacher before touching them
I should only perform authorized and approved experiments
True
False
What is the one food/drink item allowed in the classroom?
Water
Popcorn
Coffee
Granola bars
_________________ must always be worn when instructed
Safety Goggles
Gloves
Aprons
All of the above
All chemicals can be dumped down the sink
True
False
What should I do if there is an injury or accident?
Nothing
Tell the teacher
Ignore what happened
Continue the lab
You should ______________ open the cabinets in the science room or lab
Always
Sometimes
Never
All chemicals in the lab are considered _______________ and should not be tasted or touched
Safe
Dangerous
Never taste or eat anything in lab
True
False
_____________ pick up hot glassware with your bare hands
Always
Sometimes
Never
Before anyone leaves the room, _____________ needs to happen
Everything put away
Work areas are cleaned up
Chairs put away in correct spot
All of the above
I need to dress properly for a lab. That means wearing closed toed shoes and hair tied back
True
False
The information you collect while doing your experiment is called
conclusions
data
hypotheses
procedures
The variable that is being measured or observed is called the _______________. Hint: this is the variable that is the result or effect
independent variable
dependent variable
control variable
What is a constant/control in an experiment?
Things that do not change in a experiment. It's the variable that stays the same. You can have many variables stay the same.
It's the variables that the scientist changes in the experiment
It's the variables that are being measured in an experiment
If you conduct an experiment where you place 5 of the same red candies in different types of soda, all in the same amount of liquid and same type cups the indipendent variable is what?
Kind of soda
Type of cup
Amount of soda
Color of candy
A scientist investigates the effect of carbon dioxide on plant height. The scientist grows plants in several closed containers. All the plants receive the same amounts of water and light, but the air in each container has a different amount of carbon dioxide. What is the independent variable in this experiment?
the amount of carbon dioxide in each container
the number of plants in each container
the amount of water provided to the plants
the height of each plant after a period of time
Researchers are developing a new fertilizer designed to improve the growth of endangered Hawaiian plants. The fertilizer was applied to one hundred plants in a greenhouse. The temperature, humidity and amount of water were kept constant. Which is best for the researchers to do next?
A compare plants that received fertilizer plants that received none
B begin selling the fertilizer to gardeners living in hot, dry climates
C change the conditions in the greenhouse and retest the fertilizer
D test the fertilizer on plants that are adapted to cooler climates
A scientist investigates the effect of carbon dioxide on plant height. The scientist grows plants in several closed containers. All the plants receive the same amounts of water and light, but the air in each container has a different amount of carbon dioxide. What is the independent variable in this experiment?
the amount of carbon dioxide in each container
the number of plants in each container
the amount of water provided to the plants
the height of each plant after a period of time
A meteorologist recorded high temperatures for five days at three locations on land. The data are shown in the table above.
Areas at the beach have the coolest temperatures
Areas farther from the beach always have the warmest temperatures.
Areas at the beach have the most stable temperatures.
Areas farther from the beach always have the same weather as areas at the beach
What is an observation?
A scientific statement based on ideas
Using your senses to notice what is going on around you
To be unaware of your surroundings
The question that you want an answer to.
Which of the following is NOT a characteristic of a hypothesis?
An idea that is given as an “If...then...statement”
An idea that can be proven or disproven
An idea that can never be proven
A testable idea that leads to a scientific investigation
The “Normal” group in an experiment. You can COMPARE your results to this one (nothing happened to it).
Example: If you are testing the effect of the amount of water on plant growth, this group of plants receives the recommended amount of water.
Constant
Variable
Control Group
Experimental Group
How many independent variables should you have in an experiment?
two
as many as possible
four
one
To know what is causing the changes.
My brothers watned to see if a sled would go different speeds with different people on it. We alll rode in the sled separately. We meseaured how fast the sled went from the top of the hill to the fence at the bottom.
What are two CONSTANTS? (Select 2)
Distance the sled travels.
Using the same sled.
The same people in the sled
The speed of the sled.
Linda and John were performing an experiment. Linda told John to hold the beaker while she poured the hydrochloric acid into the water to dilute the acid. What important safety procedure is not being followed that could result in a severe accident?
John should not hold the beaker. It should be placed on the table.
John did not have the proper safety equipment to perform the task, thus he should have informed the teacher.
The procedures were done correctly and they may proceed to the next step.
Linda did not follow the procedures for mixing acids into other solutions.
Lab safety is everyone's _____________!
responsibility
friend
grade
goal
