Observations and Observations and InferencesInferences

Measurement/Quantitative Observations1. Number….How many?2. Temperature….How much kinetic energy?3. Length….How long, wide, high?4. Mass….How much matter?5. Volume….How much space does it take up?6. Density….How much matter per unit of volume?

(mass /volume)and more….

The 5 Senses/Qualitative Observations1. Sight2. Hearing3. Touch4. Smell5. Taste

ObservationsObservationsSomething you experience using your 5

senses (qualitative) or something you use a tool to measure (quantitative)

Examples of Examples of ObservationsObservations The sky looks blue.

You hear thunder. The rock feels rough. The cookies smell like chocolate. Ocean water tastes salty. There are 5 dolphins. The air temperature is 22 °C. The length of the ruler is 30 cm. The mass of the paper clip is 1.0 g. The volume of the cube is 27.0 cm3 (or mL). The density of water is 1.0 g/mL (or g/cm3).

Classifying ObjectsClassifying Objects

Scientists classify/sort objects into related groups based on their observations.

InferenceInference A logical conclusion based on A logical conclusion based on

your observationsyour observations

What inferences can you make based on What inferences can you make based on these observations?these observations? You see lights flashing and hear a loud siren. You see dark gray clouds moving in and it starts

getting cold out. You feel the ground is wet, and you see dark

clouds.

You See One Almost Every DayYou See One Almost Every Day

Try to draw the “heads” Try to draw the “heads” side of a penny.side of a penny.NO, you CAN’T LOOK at a NO, you CAN’T LOOK at a penny.penny.Ok… Go!Ok… Go!

How Did You Do???How Did You Do???

year

bowtie

Lincoln facing right

Make observations & inferences Make observations & inferences about the images on the about the images on the following slides.following slides.

Image 1

Image 2

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Image 4