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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 6 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. What claim does this table support?
  3. 3. Which rocks were smooth?
  4. 4. Which rock was full of tiny holes?
2.A rock feels gritty, like sandpaper. What is it probably made of?
  • A.Metal
  • B.Glass
  • C.Lots of small grains stuck together
3.Why are pebbles from a stream often smooth and round?
  • A.The water has rolled them and worn their corners off
  • B.They grew that way
  • C.People polished them
4.Which of these tells you a rock's size?
  • A.Bumpy
  • B.Shiny
  • C.As big as an egg
5.Two rocks are the same color. How else could you tell them apart?
  • A.By what day you found them
  • B.By how they feel, or by their size
  • C.You cannot tell them apart
6.How could you sort ten rocks into two groups by texture?
  • A.Rough ones and smooth ones
  • B.Gray ones and white ones
  • C.Big ones and small ones
7.Which word describes a rock's color?
  • A.Smooth
  • B.Gray
  • C.Gritty

LessonPrint · 2-PS1-1 · Set 6 · free to copy for classroom use

Answer key — Our Rock Collection

Set 6. Prints on its own sheet.

  1. 1.1. So every rock could be compared with the others and sorted. 2. Rocks can be described and sorted by size, color and texture. 3. Rocks 2, 3 and 6. 4. Rock 4, which was very light to hold.
  2. 2.Lots of small grains stuck together
  3. 3.The water has rolled them and worn their corners off
  4. 4.As big as an egg
  5. 5.By how they feel, or by their size
  6. 6.Rough ones and smooth ones
  7. 7.Gray

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