Science Practice Test 2 Corrections Replacement

Front

What is the role of pigments in photosynthesis?

Back

Pigments absorb light energy, which is then used to convert carbon dioxide and water into glucose and oxygen during photosynthesis.

Front

What is the absorption spectrum of chlorophyll A?

Back

Chlorophyll A primarily absorbs light in the blue (around 430 nm) and red (around 662 nm) wavelengths, with lower absorption in the green range.

Front

What is viscosity?

Back

Viscosity is a measure of a fluid's resistance to flow, influenced by factors such as temperature and molecular mass.

Front

How does molecular mass affect viscosity?

Back

Generally, as molecular mass increases, viscosity tends to increase due to larger molecules interacting more with each other.

Front

What is a line graph used for?

Back

A line graph is used to display data points over time, showing trends and changes in a variable.

Front

What is the purpose of measuring voltage in a circuit?

Back

Measuring voltage helps determine the electrical potential difference across components, which is essential for understanding circuit behavior.

Front

What is the difference between a bar graph and a line graph?

Back

A bar graph compares different categories, while a line graph shows changes over time for a continuous variable.

Front

What is the significance of the heat released by food in scientific experiments?

Back

The heat released by food can be measured to determine its energy content, which is important in studies of nutrition and metabolism.

Front

What does it mean if a scientist's hypothesis is not supported by data?

Back

It means that the experimental results do not align with the predictions made by the hypothesis, leading to a reevaluation of the hypothesis.

Front

What is the scientific method?

Back

The scientific method is a systematic approach to inquiry that involves observation, hypothesis formulation, experimentation, and conclusion.