Question

Unit 2 & 3: Energy Test
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Question
Possible Points: 2
A student pours a cup of blue water with a temperature of 10 degrees Celsius into a cup of warm water with a temperature of 50 degrees Celsius. She observes that the blue color sinks to the bottom of the cup. Why does this happen? Select all that apply.
Responses

because the blue color molecules are denser than the warm water
because the blue color molecules are denser than the warm water

because the blue color molecules move through conduction
because the blue color molecules move through conduction

because the blue color molecules move faster than the warm water
because the blue color molecules move faster than the warm water

because the blue color molecules break down
because the blue color molecules break down

because the blue color molecules move slower than the warm water
because the blue color molecules move slower than the warm water

because the blue color molecules are a type of radiation
because the blue color molecules are a type of radiation

Answer 1

The correct responses to the question regarding why the blue color sinks to the bottom of the cup when mixed with warm water are:

1. **because the blue color molecules are denser than the warm water** – This explains that density plays a significant role; if the blue color molecules are denser, they will sink.
2. **because the blue color molecules move slower than the warm water** – This indicates that the kinetic energy of the warm water molecules is higher, leading to a situation where the less energetic blue molecules can sink amidst the more energetic warm water.

The other options regarding conduction, breaking down, and radiation are not accurate in this context. Therefore, the first and fifth options capture the primary reasons for the observed behavior.