Question

question 4
which of the following is a key feature of a convection cycle?
warm fluid rises, cool fluid sinks
heat freezes the material in place
warm and cool fluids mix evenly and stop
particles move at the same speed in all temperatures
question 5
a student is building a model of gas behavior. what is the most important feature to include?
solid particles stacking up
particles that are far apart and moving quickly
a fixed shape and volume
particles vibrating close together
question 6
match each word with the correct description.

Explanation:

• Question 4: In a convection cycle, warm fluid (less dense) rises and cool fluid (more dense) sinks. Heat does not freeze material (it causes motion), warm and cool fluids do not mix evenly and stop (they form a cycle), and particle speed varies with temperature.
• Question 5: Gases have particles that are far apart and moving quickly. Solids have particles stacking up or vibrating close together, and solids (not gases) have a fixed shape and volume.

Answer:

• Question 4: Warm fluid rises, cool fluid sinks
• Question 5: Particles that are far apart and moving quickly