ACT Science Prep 2

Front

What is thermal conduction?

Back

Thermal conduction is the process by which heat energy is transferred through direct contact between materials. It occurs when faster-moving particles collide with slower-moving ones, transferring energy.

Front

What is the difference between a conductor and an insulator?

Back

A conductor is a material that allows heat or electricity to flow through it easily (e.g., metals), while an insulator is a material that resists the flow of heat or electricity (e.g., wood, rubber).

Front

What is an experimental group in scientific research?

Back

An experimental group is a set of subjects that are exposed to a treatment or condition in an experiment, allowing researchers to observe the effects of that treatment.

Front

What is the purpose of a control group in an experiment?

Back

A control group is used as a benchmark to compare the results of the experimental group. It does not receive the treatment and helps to isolate the effects of the treatment.

Front

What is the significance of graphing data in scientific experiments?

Back

Graphing data helps visualize relationships between variables, making it easier to identify trends, patterns, and anomalies in the data.

Front

What does it mean if a material is a good thermal conductor?

Back

A good thermal conductor is a material that allows heat to pass through it quickly and efficiently, resulting in a rapid increase in temperature.

Front

How can you determine the effectiveness of different types of exercise on heart rate?

Back

By measuring heart rate before and after different exercises, you can compare the effects of each type of exercise on heart rate.

Front

What is the relationship between heat released by food and water temperature change?

Back

The heat released by food increases the temperature of water, and the relationship can be illustrated through graphs showing the correlation between the two.

Front

What is the importance of sample size in surveys?

Back

A larger sample size generally provides more reliable and valid results, reducing the impact of outliers and increasing the accuracy of the findings.

Front

What is a bar graph used for?

Back

A bar graph is used to compare different groups or categories, showing the frequency or amount of each category visually.