Hydrogen bonding between water molecules produces the properties of surface tension and capillarity
Indicate whether the statement is true or false
TRUE
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When no visible radiation strikes the rods or cones in the human eye, a surface will appear ____
A) blue B) black C) white D) gray
Which of the following is a method used by farmers to protect crops from freezing?
A) covering crops with plastic B) spraying crops with water that then freezes to ice C) mixing the air around and above crops D) supplying heat to crops with outdoor heaters E) all of the above
A rubber ball weighs 1.5 N on Earth. Another kind of ball weighs 1.5 N on the Moon. The ball having the most mass is the
A. rubber ball. B. other kind of ball. C. same for each D. not enough information
How do freezing, thawing, wetting, and drying contribute to soil creep?
A) The soil becomes much weaker when dry and frozen. B) The soil expands and contracts, lifting particles and dropping them a slight distance downslope. C) Gravity exerts a much stronger force when the soil is wet and thawed. D) Eventually, these cause the soil and regolith to suddenly slide down the slope.