SCIENCE: ENERGY TRANSFER AND TEMPERATURE TEST.

Question

SCIENCE: ENERGY TRANSFER AND TEMPERATURE TEST.

USE THE TABLE TO ANSWER THE QUESTION.
SAMPLE / OBSERVATION
1/ THE DROP OF FOOD COLORING SPREADS SLOWLY
2/ THE DROP OF FOOD COLORING SPREADS VERY QUICKLY

A STUDENT PLACES A DROP OF FOOD COLORING INTO TWO WATER SAMPLES. HER OBSERVATIONS ARE SHOWN IN THE TABLE. WHICH STATEMENT BEST EXPLAINS THE OBSERVATIONS IN THE TABLE?

1. THE WATER MOLECULES OF SAMPLE 1 ARE MOVING FASTER.
2. THE TEMPERATURE OF SAMPLE 2 IS CLOSE TO FREEZING.
3. THE WATER MOLECULES OF SAMPLE 1 ARE TRANSFERRING MORE KINETIC ENERGY.
4. THE TEMPERATURE OF SAMPLE 2 IS HIGHER.

Answer 1

The best explanation for the observations in the table is option 3: The water molecules of sample 1 are transferring more kinetic energy. This is because the food coloring spreads more slowly in sample 1, indicating that the water molecules in sample 1 have less kinetic energy and are moving at a slower rate.