Question

Can you check my answers for science? Im not sure on all of them.

Answer 1

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)
temperature
heat
thermal energy
kinetic energy***
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)
precipitation
melting
condensation
sublimation***
6. The ____ is a unit of force. (1 point)
pascal
atmosphere***
newton
kilopascal
7. Which of the following is the boiling point of water? (1 point)
-40°C
0 °C
100°C***
130°C

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

Answer 2

the stars are what I think the answer is

Answer 3

please help

Answer 4

1. [correct]
2. the average kinetic energy measurement is the definition of temperature.
3. buoyancy and density
4. weight of the displaced fluid
5. [correct]
6. newton (atmosphere is a unit of pressure)
7. [correct]
8. [correct]