Peet JH Semester Exam REVIEW - FALL 2024

Front

What happens to food coloring in water at higher temperatures?

Back

Food coloring spreads out faster in water at higher temperatures due to increased molecular movement.

Front

What is thermal energy?

Back

Thermal energy is the total energy of all the particles in a substance, which increases with temperature and the number of particles.

Front

How does the size of a container affect its thermal energy at the same temperature?

Back

A larger container has more particles, thus it has more total thermal energy compared to a smaller container at the same temperature.

Front

What is the energy transfer in a food web?

Back

Energy transfer in a food web decreases at each trophic level, with only a fraction of energy available to the next level.

Front

How much energy is available to an owl if a tree receives 475 J from the Sun?

Back

The owl would receive 0.475 J of energy from the tree.

Front

What is a good insulator for heat?

Back

Plastic is a good insulator for heat, preventing heat transfer.

Front

What are signs of a chemical change?

Back

Signs of a chemical change include bubbles or fizzing, temperature change, and formation of a precipitate.

Front

What is NOT evidence of a chemical change?

Back

An expected color change is NOT evidence of a chemical change.

Front

What is the relationship between temperature and molecular movement?

Back

As temperature increases, molecular movement increases, leading to faster diffusion.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.