Overview
Science investigates natural phenomena using observations and explanations that can be tested against evidence. School science introduces living systems, matter, energy, Earth, and space. These areas share habits of inquiry but use different methods: astronomers cannot manipulate stars, whereas chemists can often control conditions in a laboratory experiment directly.
Core ideas
A hypothesis proposes an explanation; a prediction describes an expected observation if that explanation holds. Variables, comparison groups, measurement precision, and repeated trials affect interpretation. Scientific theories are broad explanatory frameworks, not casual guesses. Findings remain open to revision, but uncertainty does not imply that all explanations deserve equal confidence.
Try it
Investigate how a paper helicopter's blade length affects its fall time. Change only blade length, use the same drop height, and repeat each trial several times. Record all results, including awkward flights. Compare averages and variation, then explain whether your observations support a clear relationship or suggest that your measurement method needs improvement.
Study pathways
Further study branches into laboratory sciences, environmental work, engineering, science education, and research communication. Build mathematical skills alongside practical observation and clear recordkeeping. Laboratory and field activities require appropriate supervision and risk assessment. Professional scientific work may involve advanced degrees, technical certifications, or regulated responsibilities that an introductory course cannot provide alone.