18
Is the buoyant force greater than, less than, or equal to, the weight of the objects below? Fig. 1 Fig. 2 Fig. 3 Less Than Greater Than Equal To

Density Anomaly

Embed Size (px)

DESCRIPTION

 

Citation preview

Page 1: Density Anomaly

Is the buoyant force greater than, less than, or equal to, the weight of

the objects below?

Fig. 1

Fig. 2

Fig. 3Less Than

Greater Than

Equal To

Page 2: Density Anomaly

ReviewReview Density Buoyancy

Liquids Gases

Page 3: Density Anomaly

Density AnomalyDensity Anomaly Hydrogen bond - when the (+) side of an H2O molecule attracts the (-) side of another H2O molecule

Page 4: Density Anomaly

Liquid HLiquid H22OO Hydrogen bond

Page 5: Density Anomaly

Density AnomalyDensity Anomaly As H2O cools off, the

hydrogen bonds become stronger

“ice” crystals formRegular

repeating arrangement

of atoms

Page 6: Density Anomaly

Solid H2O“ice”

Page 7: Density Anomaly

Water Ice

Page 8: Density Anomaly
Page 9: Density Anomaly

Density AnomalyDensity Anomaly As ice forms, its volume increases

But its mass stays the same

Page 10: Density Anomaly

Density AnomalyDensity Anomaly When the volume goes up,

but the mass stays the same, the density goes down

Page 11: Density Anomaly

Why does ice float?Why does ice float? Solid H2O (ice) is less dense than liquid H2O (water)

Ice = .9 g/cm3

Water = 1 g/cm3

Page 12: Density Anomaly
Page 13: Density Anomaly
Page 14: Density Anomaly
Page 15: Density Anomaly
Page 16: Density Anomaly
Page 17: Density Anomaly
Page 18: Density Anomaly

Lake Superior froze over

completely in 1996