Lab Safety
You enter the science classroom and see lots of cool new supplies and equipment out for a lab. What should you do?
Do not touch any materials until after receiving instructions
The two types of variables we learned about are....
What is independent, dependent, and controlled variables?
This term refers to gathering information using the five senses without adding personal interpretations or opinions.
What is observation?
Define energy
What is the ability to do work; cause a change?
What do we call the type of energy that is associated with the motion of particles in a substance and determines its temperature?
What is thermal energy?
What could happen if a student spills food or drink on their lab experiment or equipment?
What is possible contamination, damage to equipment, or interference with results?
In an experiment, this type of variable is deliberately changed or manipulated by the researcher.
What is an independent variable?
When you make a conclusion based on your own interpretation of observations, you are making this kind of statement.
What is an inference?
What are some examples of energy being converted or transformed?
Wide range of answers. (e.g., motion to sound; motion to heat; electrical to light; electrical to heat; etc..)
Types of material, such as metal, that allow heat to flow through them easily are known as......
What are conductors?
When is it appropriate to run or horse play in the lab environment?
When is never appropriate; walking is the safe way to move around the lab.
This type of variable is the outcome or result that is measured in response to changes in the independent variable
What is a dependent variable?
"The grass is wet" is an example of this type of statement.
What is an observation?
What are some examples of energy being converted or transferred?
Wide range of answers (e.g., something wasn’t moving, then it moved; something is dropped; heat; light; sound; etc.)
Materials like rubber and wood are good examples of...
What is insulators?
What is the proper attire that students should wear in a science lab to protect themselves?
What is closed toe shoes, and clothing that does not excessively hang or cover hands. BONUS: If you have long hair a hair tie or clip.
If an experiment examines the effects of different amounts of fertilizer on plant growth, what would be a suitable control variable?
What is using the same type of plant, soil, and environmental conditions for all groups?
"Since there are wet footprints leading from the grass to the porch, someone must have walked through the wet grass" is an example of this type of statement.
What is an inference?
What is the difference between kinetic and potential energy?
Kinetic energy relates to motion or movement and Potential energy is energy with the capacity to develop into something different in the future.
What is being measured when we take the temperature of something?
We are measuring the average kinetic energy of the atoms/molecules in a substance
Before using sharp instruments like scissors or scalpels in the lab, it's important to follow this safety practice to avoid accidents.
What is cut away from your body?
In an experiment studying plant height growth, if the amount of sunlight is changed to observe its effect on growth, what is the independent variable? What is the dependent?
What is independent is the amount of sunlight and dependent plant height?
If you see a person wearing a raincoat and carrying an umbrella, what might you infer about the weather?
What is that it might be raining?
Name the 10 types of energy..
What is sound, solar, nuclear, chemical, electrical, kinetic, light, mechanical, potential, thermal.
What is heat? What is cold?
Heat is the transfer of thermal energy from one object to another. Cold is just where there is less thermal energy.