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1. Which of the following is a reason why a person might want to wear snowshoes if walking a distance in deep snow? (1 point)
snowshoes spread the person’s weight out
snowshoes reduce the amount of pressure on a given spot
snowshoes keep the person from sinking in the snow
all of these ***
2. The measure of the average kinetic energy of the particles of a substance is the ____. (1 point)
3. Archemedes’ Principle helps to explain the relationship between ____. (1 point)
kinetic energy and density
temperature and density
pressure and density***
buoyancy and density
4. Which of the following is equal to the buoyant force of a rock placed in a beaker of water? (1 point)
volume of the displaced fluid***
weight of the displaced fluid
volume of the rock
weight of the rock
5. Dry ice is an example of _________, which is the process of a solid turning directly into a gas. (1 point)
6. The ____ is a unit of force. (1 point)
7. Which of the following is the boiling point of water? (1 point)
8. Which of the following describes the molecular structure of water at 40°C? (1 point)
water molecules are packed closely together and move only a little
water molecules are spread out and moving vigerously
water molecules are close together and moving freely around each other***
none of these
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2. the average kinetic energy measurement is the definition of temperature.
3. buoyancy and density
4. weight of the displaced fluid
6. newton (atmosphere is a unit of pressure)