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In a Day or in an Age is a free printable Grade 2 science worksheet on evidence that Earth events happen quickly or slowly, aligned to Common Core standard 2-ESS1-1. It prints 3 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 20 of 25 · the same problems every time you open this link.

Next setLesson plan

One paper per pupil

Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

In a Day or in an Age

2-ESS1-1

NameDate

Sort each event into quick or slow.

LessonPrint · 2-ESS1-1 · Set 20 · free to copy for classroom use

Answer key — In a Day or in an Age

Set 20. Prints on its own sheet.

  1. 1.1. A cave forming in limestone — Happens slowly 2. A mountain being worn down — Happens slowly 3. A storm washing a beach away — Happens quickly 4. A volcano erupting — Happens quickly
  2. 2.1. A cliff falling into the sea — Happens quickly 2. A flash flood filling a valley — Happens quickly 3. A valley being carved by a glacier — Happens slowly 4. Soil forming from broken rock — Happens slowly
  3. 3.1. A canyon being cut by a river — Happens slowly 2. A coastline being shaped by waves — Happens slowly 3. A landslide down a hillside — Happens quickly 4. An earthquake shaking the ground — Happens quickly

More practice for 2-ESS1-1

Show with evidence that some Earth events are fast and some are slow.

Teaching this next? In a Day or in an Age is the 50-minute plan for it, with the misconceptions to expect.

All Grade 2 worksheets

Last reviewed 2026-09-05. Aligned to 2-ESS1-1 of the Next Generation Science Standards.