Scientific method, lab safety and whmis for quiz 1

What is the first step in the scientific method?

• conducting an experiment

• analyzing the data

• forming a hypothesis

• asking a question

Which of the following describes a hypothesis?

• Fact proven by data

• guess based on personal belief

• educated guess that can be tested

• a proven theory

What is an independent variable?

• the variables we keep the same in the experiment

• the outcome we hope to see after doing the experiment

• the one variable we change in the experiment

Why would repeating an experiment be a good idea (best answer)?

• to ensure you get the results that match your hypothesis

• to be able to rewrite your hypothesis with the different results

• to confirm you have accurate and reliable results.

• to become an expert in that experiment

What is the dependent variable in an experiment?

• The one thing you change in the experiment

• The variables you keep the same in the experiment

• The outcome on your experiment

What does WHMIS stand for?

• Workplace Hazardous Materials Information System

• Worldwide Hazardous Materials Information System

• Work Hazard Management Information System

• Workplace Handling Materials and Information System

What WHMIS symbol indicated a material that can cause death or toxicity with SMALL exposure

• Exploding bomb

• Health hazard

• Skull and crossbone

• Exclamation mark

If you were asked to develop a fluid-based transportation system for moving mineral ores, what are the most critical fluid properties you would need to consider?

• Colour and surface tension

• Solubility and flammability

• Compressibility and odour

• Density and viscosity

What is the role of a control group in an experiment?

• To introduce new variables

• To serve as a baseline for comparison

• To ensure the experiment is biased

• To change the outcome of the experiment

Which WHMIS symbol represents a material that is corrosive to metals?

• Flame over circle

• Corrosion

• Gas cylinder

• Environment