11 Investigating Science Module 2 Quiz (IQ 1 and 2).

What is the primary method used by Australian Aboriginal people to detoxify cycads for consumption?

• Boiling the seeds

• Fermenting the seeds

• Leaching the seeds

• Sun drying the seeds

Answer explanation

Leaching the seeds is the primary method used by Australian Aboriginal people to detoxify cycads for consumption.

Which of the following is NOT a step in the process of making cycad seeds safe for consumption by Australian Aboriginal people?

• Cracking the seeds open

• Grinding the seeds into a paste

• Freezing the seeds

• Rinsing the seeds repeatedly

Answer explanation

Freezing the seeds is NOT a step in making cycad seeds safe for consumption by Australian Aboriginal people. The correct steps include cracking the seeds open, grinding them into a paste, and rinsing them repeatedly.

How do Australian Aboriginal communities locate freshwater sources in saltwater environments?

• By testing the water's pH level

• By observing natural signs such as vegetation changes and animal behavior

• By using modern technological devices

• By mapping the stars

Answer explanation

By observing natural signs such as vegetation changes and animal behavior

What does a change in colouration within cave formations typically signify?

• The presence of different minerals or variations in oxidation states

• The air quality inside the cave

• The humidity levels

• The presence of aquatic life

Answer explanation

The change in coloration within cave formations typically signifies the presence of different minerals or variations in oxidation states.

What aspect of cave formations can reveal patterns of growth and deposition?

• The smell of the cave

• The sound produced by the cave

• The structure of stalactites and stalagmites

• The luminosity of the cave

Answer explanation

The structure of stalactites and stalagmites can reveal patterns of growth and deposition in cave formations.

What role do secondary sources play in the development of hypotheses in scientific research?

• They provide a foundation by presenting existing theories, models, and empirical evidence.

• They primarily focus on collecting new, primary data.

• They discourage the formulation of new research questions.

• They limit the scope of investigation to previously explored areas.

Answer explanation

Secondary sources provide a foundation by presenting existing theories, models, and empirical evidence, aiding in the development of hypotheses in scientific research.

How do secondary sources help researchers in the planning phase of an investigation?

• By offering insights into methodological insights, practical considerations, and ethical guidelines.

• By providing financial support for experiments.

• By conducting the experiments themselves.

• By publishing the results of the study.

Answer explanation

By offering insights into methodological insights, practical considerations, and ethical guidelines.

What is a significant benefit of using secondary sources in scientific research to avoid unnecessary investigations?

• They summarize existing knowledge and highlight extensively studied areas.

• They introduce entirely new theories and models.

• They replace the need for primary research.

• They ensure the success of new experiments.

Answer explanation

They summarize existing knowledge and highlight extensively studied areas.

What is the primary reason for fermenting cycad seeds before consumption by Australian Aboriginal people?

• To enhance their flavor

• To increase their nutritional value

• To reduce toxins

• To preserve them for longer periods

Answer explanation

To reduce toxins is the primary reason for fermenting cycad seeds before consumption by Australian Aboriginal people.

What does the presence of large stalactites and stalagmites in a cave indicate about the cave's environmental history?

• Low levels of water flow over time

• High levels of mineral deposits over time

• Recent formation of the cave

• Frequent human activity

Answer explanation

High levels of mineral deposits over time indicate the presence of large stalactites and stalagmites in a cave.