100 200 300 400 500 Scientific Method Steps Science Lab Rules Observations or Inferences Qualitative or Quantitative Hypothesis & Variables WHMIS and International Safety Symbols Science Lab Rules

What is the University of Washington? Example A public institution in the Pacific Northwest with a Husky named “Dubs” as its mascot What is the University of Washington?

What do all scientific experiments begin with? 100 What do all scientific experiments begin with? A Problem or Question

200 The part of the scientific method where the experimenter makes an “Educated Guess”. The Hypothesis

Conclusion- or Report Results 300 The part of the scientific method that includes sharing the findings and results of the experiment with others. Conclusion- or Report Results

Background knowledge, Make observations, make inferences 400 The 3 steps that occur during the “analyze information” step Background knowledge, Make observations, make inferences

These are the steps of the scientific method. 500 These are the steps of the scientific method. Problem, Analyze Information, Make a hypothesis, Conduct experiment, collect/analyze data, report results

The animal is walking not running. 100 The animal is walking not running. Inference

You see steam rising off a cup of coffee. Observation or Inference? 200 You see steam rising off a cup of coffee. Observation or Inference? Observation

What is the definition of an observation? 300 What is the definition of an observation? Carefully using your 5 senses to describe what is happening in front of you

What is the definition of an inference? 400 What is the definition of an inference? Using background knowledge and observations to come to a conclusion/opinion

The grass is so wet it must’ve rained last night. 500 The grass is so wet it must’ve rained last night. Inference

There are bubbles forming in the test tube. 100 There are bubbles forming in the test tube. Qualitative

200 Tube B is heated to 20°C. Quantitative

Any observation that uses the 5 senses 300 What are qualitative observations? Any observation that uses the 5 senses

Any observation that uses numbers to describe something 400 What are Quantitative Observations? Any observation that uses numbers to describe something

QuaLitative= L for looks QuaNtitative= N for numbers 500 How can we remember the difference between Qualitative and Quantitative Observations? QuaLitative= L for looks QuaNtitative= N for numbers

If______then____ because______ 100 What is the standard format for writing a Hypothesis? If______then____ because______

What is an independent variable? 200 What is an independent variable? Any variable that is intentionally manipulated or controlled by the experimenter

What is a dependent variable? 300 What is a dependent variable? Any variable that changes or depends on the manipulation of the independent variable. Not Controlled.

What is a controlled variable? 400 What is a controlled variable? Any variable that an experimenter must keep constant to prevent it from having an effect on the dependent variable.

500 Independent: Type of cream he uses Homer was told that a certain itching powder was the newest best thing on the market. It even claims to decrease itching by 50 % because it contains caffeine. Interested in this product, he buys the itching powder and compares it to his usual product, which contains aloe vera. On one itching spot, he puts the new powder. On another itching spot, he puts his old cream. He then times how long it takes for the products to stop his itch. What is the independent variable? The Dependent Variable? Controlled Variables? Independent: Type of cream he uses Dependent: How quickly the cream stops the itch Controlled variables: amount of cream used, size of itch etc

What is the following symbol and why is it hazardous? 100 What is the following symbol and why is it hazardous? Biohazard- anything that may cause disease or illness in humans or animals

What is the following symbol and why is it hazardous? 200 What is the following symbol and why is it hazardous? Compressed gas- container may explode and become projectile if punctured or damaged

What is the following symbol and why is it hazardous? 300 What is the following symbol and why is it hazardous? Dangerously reactive- may have an explosive or dangerous reaction when mixed with other chemicals

400 What is the following symbol, why is it hazardous, and which level of caution is it indicating? Corrosive, may burn or eat away at skin or metals, danger- highest level of caution

500 What does the following symbol stand for, why is it hazardous and which level of caution is it indicating? Explosive, may explode if punctured or heated, Warning- lowest level of caution

Baggy clothing, open toed shoes, jewelry 100 What are things that should not be worn in the science lab? Baggy clothing, open toed shoes, jewelry

How do you safely test the odor of a chemical? 200 How do you safely test the odor of a chemical? Wafting technique

What should a person do to their hair before conducting an experiment? 300 What should a person do to their hair before conducting an experiment? Pull it back

Report it to the teacher. 400 What should you do if you break a piece of glass or spill a chemical? Report it to the teacher.

When should you begin your experiment? 500   When should you begin your experiment? After you have read the instructions, listened to directions, and the teacher has told you to do so.

FINAL JEOPARDY What is the scientific method used for? Process of solving scientific problems. (A way of thinking and gathering knowledge that is both accurate and reliable)