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Our Rock Collection is a free printable Grade 2 science worksheet on describing and sorting rocks by size, color and texture, aligned to NGSS performance expectation 2-PS1-1. It prints 7 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 12 of 25 · the same problems every time you open this link.

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

Our Rock Collection

2-PS1-1

NameDate

Read the record, then answer the questions.

1.Read the record, then answer the questions.

Our Rock Collection

A table the class made of six rocks brought in from home, looked at with a hand lens. SIX ROCKS Rock 1: as big as a fist, gray, rough, with sparkly specks Rock 2: as small as a grape, white, smooth and round Rock 3: as flat as a cookie, dark gray, smooth, splits into layers Rock 4: as big as an egg, pale gray, full of tiny holes, very light to hold Rock 5: as big as a plum, red-brown, gritty like sandpaper Rock 6: as small as a marble, black, smooth and shiny We looked at the size, color and texture of every rock.

  1. 1. Why did the class look at the same three things for every rock?
  2. 2. Which rock was the biggest?
  3. 3. What claim does this table support?
  4. 4. Why did the class use a hand lens?
2.Why are pebbles from a stream often smooth and round?
  • A.They grew that way
  • B.People polished them
  • C.The water has rolled them and worn their corners off
3.Two rocks are the same color. How else could you tell them apart?
  • A.By what day you found them
  • B.You cannot tell them apart
  • C.By how they feel, or by their size
4.A rock has sparkly specks in it. Which sense did you use to notice that?
  • A.Sight
  • B.Smell
  • C.Hearing
5.Which word describes how a rock feels?
  • A.Red
  • B.Rough
  • C.Big
6.How could you sort ten rocks into two groups by texture?
  • A.Gray ones and white ones
  • B.Rough ones and smooth ones
  • C.Big ones and small ones
7.A rock feels gritty, like sandpaper. What is it probably made of?
  • A.Glass
  • B.Lots of small grains stuck together
  • C.Metal

LessonPrint · 2-PS1-1 · Set 12 · free to copy for classroom use

Answer key — Our Rock Collection

Set 12. Prints on its own sheet.

  1. 1.1. So every rock could be compared with the others and sorted. 2. Rock 1, as big as a fist. 3. Rocks can be described and sorted by size, color and texture. 4. To see small details, like the sparkly specks in rock 1.
  2. 2.The water has rolled them and worn their corners off
  3. 3.By how they feel, or by their size
  4. 4.Sight
  5. 5.Rough
  6. 6.Rough ones and smooth ones
  7. 7.Lots of small grains stuck together

Last reviewed 2026-09-05. Aligned to 2-PS1-1 of the Next Generation Science Standards.