Science Investigation Flashcards

Which of the following is the best example of an inference in science?

Answer: The fast-moving water likely caused the rock to erode

An inference is a logical explanation or interpretation based on observations, not a direct measurement.

A student designs an experiment with only two trials. A classmate suggests doing five trials instead. Why is this good advice?

Answer: More trials reduce the effect of random errors and increase reliability

More trials reduce the impact of random errors and make results more reliable and trustworthy.

When a student uses a hand lens to observe a leaf, what type of scientific skill is being demonstrated?

Answer: Observing

Using a hand lens to look closely at a leaf is an example of making detailed observations.

A student predicts that a metal ball will sink in water. After testing, the ball floats. What should the student do next?

Answer: Revise the prediction based on the new evidence

When results differ from predictions, scientists revise their understanding based on the new evidence.

Which of the following describes the correct order of steps in a scientific investigation?

Answer: Observe → Hypothesize → Experiment → Analyze → Conclude

The scientific method proceeds from observation and hypothesis through experimentation, analysis, and conclusion.

A student records data showing that taller students tend to have larger shoe sizes. What type of relationship does this data show?

Answer: Correlation between two variables

A correlation means two variables tend to change together, but does not prove one causes the other.

Why do scientists share their methods and results with other scientists?

Answer: To allow other scientists to verify and replicate findings

Sharing methods allows other scientists to replicate experiments and verify that results are valid.