Observation
What is an observation?
Gathering information with the senses
Should anything ever go into your mouth during a lab?
A. Yes, if it is food
B. No
C. Yes
B
True or False: An inference can be wrong.
True
How many centimeters does it take to make one meter?
100
Why do scientists record observations carefully during an experiment?
So they have accurate data to analyze and compare.
What should you always wear to protect your eyes in the lab?
What are goggles?
You see smoke and say, “There must be a fire.” Is that observation or inference?
What is an inference?
If you need to measure temperature, what tool would you use?
thermometer
You see a student yawning. You say, “They stayed up too late.” Which part is the observation?
Yawning = observation; Stayed up too late = inference
What should you do if you spill something in a lab?
Tell your teacher and then clean it up if it is safe to do so.
An infernece is based on observations and _______ ______________
Prior knowledge
Which metric unit is used to measure weight in science class?
What are grams?
You measure a rock and note it weighs 250 grams Is this a quantitative observation or a qualitative observation?
250 grams = quantitative;
Why should you never eat or drink in the science lab?
To avoid accidentally ingesting chemicals or harmful substances.
You see frost on the grass. You say, “It must have been cold last night, because there is frost on the windows.” What part of this sentence is an inference?
It must have been cold last night
Why is it important to use the metric system in science?
So scientists everywhere use the same standard units.
The pillow is soft. Is this a qualitative or quantitative observation?
Qualitative
What does waft mean?
To gently blow a smell towards you.
If you put our three bird feeders and
2 birds go to bird feeder A,
15 birds go to bird feeder B,
8 birds go to bird feeder C,
Which feeder do the birds like best?
Feeder B
Which tool measures liquid volume?
Graduated Cylinder