Lab Safety
What should you always wear in the lab for protection?
Lab coat, gloves, and safety goggles
What does WHMIS stand for?
WHMIS stands for Workplace Hazardous Materials Information System.
What is the scientific method?
It is a process that is used to find answers to questions about the world around us.
In order to make sure that only one factor is being changed in an experiment, the test is divided into two groups. WHAT ARE THE TWO GROUPS?
Control Group & Experimental Group
Fill In The Blank: Plants that get regular watering grow taller.
Independent Variable: ______________________ Dependent Variable: _____________________
Independent Variable: Regular Watering
Dependent Variable: Plant Height
What should you do if you break a piece of glassware in the lab?
Notify your teacher and sweep the glass into a dustpan, disposing of it in a proper broken glassware container
What does MSDS stand for?
Material Safety Data Sheets
What is data?
It is information gathered during an experiment.
Fill In The Blank: Sunflowers that get more water grow over six feet tall.
Control Group: ______________________
Experimental Group: _____________________
Control Group: Sunflowers getting less water
Experimental Group: Sunflowers getting more water
Fill In The Blank: People who smoke cigarettes have a higher incidence of lung cancer.
Independent Variable: ______________________ Dependent Variable: _____________________
Independent Variable: Smoking cigarettes
Dependent Variable: Incidence of lung cancer
True or False - It is OK to wear sandals or flip-flops in the laboratory as long as you're careful?
False
What's the danger of a POISONOUS AND INFECTIOUS MATERIAL symbol?
The material is a potentially fatal poisonous substance. It may be fatal or cause permanent damage if it is inhaled, swallowed or absorbed through skin. May burn skin or eyes on contact.
True or False: Is there only one “scientific method”?
False
Knee replacement patients who participate in physical therapy can climb stairs three days after surgery.
Control Group: ______________________
Experimental Group: _____________________
Control Group: Knee replacement patients – no physical therapy
Experimental Group: Knee replacement patients – with physical therapy
Fill In The Blank: Puppies that are given vitamins gain more weight.
Independent Variable:______________________ Dependent Variable: _____________________
Independent Variable: Vitamins
Dependent Variable: Puppy weight
What should you do if you spill a chemical during an experiment?
Notify your teacher immediately and follow their instructions
What's the danger of a FLAMMABLE AND COMBUSTABLE MATERIALS symbol?
The material is a potential fire hazard. It may burn at relatively low temperature. Sparks, flame or friction could ignite it.
What is a hypothesis?
It is an educated guess based on observations and your knowledge of the topic.
Fill In The Blank: Hot water dissolves more sugar than cold water.
Control Group: ______________________
Experimental Group: _____________________
Control Group: Cold water
Experimental Group: Hot water
Fill In The Blank: Researchers want to know if the gas mileage of cars will increase with a new type of asphalt surface on roads.
Independent Variable:______________________ Dependent Variable: _____________________
Independent Variable: Type of asphalt surface
Dependent Variable: Gas mileage
What is prohibited in the laboratory?
Eating or Drinking
What's the danger of a CORROSIVE MATERIAL symbol?
The danger of a corrosive material is that it can cause caustic or acid materials to corrode metals like iron, aluminum, and other materials. It can also damage living tissue.
Fill In The Blank A scientist might test a hypothesis by conducting an ___________ to see if the hypothesis is correct
Experiment
Fill In The Blank: At-risk children who attend Head Start get better grades in reading in second grade.
Control Group: ______________________
Experimental Group: _____________________
Control Group: At-risk children who did not attend Head Start
Experimental Group: At-risk children who attended Head Start
Fill In The Blank: People with an income greater than $50,000 spend more money on eating out than people who make less than $30,000.
Independent Variable:______________________ Dependent Variable: _____________________
Independent Variable: Income
Dependent Variable: Money spent on eating out