This is a two-page printable reading activity about the planet Neptune. The first page is a short (approximately 450-word) informational text. The second page is a crossword which covers content and vocabulary which is highlighted in bold within the text.
The text focuses on the discovery of Neptune. Unlike the other planet's, Neptune was not discovered through observation and luck but was predicted to exist based on the evidence of Uranus' irregular orbit. Its location was then determined using math and finally confirmed via direct observation. This is a great story for illustrating the concepts of observation, prediction, hypotheses, and evidence in science.
The crossword has eight clues total, for example:
Clue: A possible explanation that is based on evidence and not assumed to be true.
Clue: The amount of time it takes for a planet to revolve around the sun once.
Clue: Le Verrier used ____ to determine where to look in the sky for a new planet.
I have more crosswords on a variety of topics at my store, CuriousCrosswords. You can also find free printables, activity ideas, and links to lesson plans at my blog, www.CuriousCrosswords.com.
I hope you enjoy using my puzzles as much as I enjoy creating them!