Science
4 min
CrispFacts / Subject index
Science
Clear distinctions between scientific terms, measurements, and evidence, with examples that show where each explanation applies.
- Entries
- 16
- View
- Complete
Refine the index Categories and subjects
-
-
Science4 min
The Moon’s Monthly Phases Are Usually Not Earth’s Shadow
Follow the geometry of a crescent, a full moon, and a lunar eclipse without confusing illumination with shadow. -
Science6 min
Sound Frequency, Period, and Pitch Describe Different Parts of a Wave
Hertz counts cycles, period measures their duration, and pitch describes perception. Read a sound graph without confusing frequency, loudness, and travel speed. -
Science6 min
Physical or Chemical Change? The Evidence Is About Substance Identity
A new shape, bubbles, or a temperature change does not alone prove a chemical reaction. Distinguish observations from evidence that substances have changed.