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Earth Materials at Work is a free printable Grade 2 science worksheet on explaining why a rock, a soil or water suits the job it is used for, aligned to NGSS performance expectation 2-PS1-2. It prints 8 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 23 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.

Earth Materials at Work

2-PS1-2

NameDate

Circle the best answer.

1.Why is soil, not sand, best for a vegetable patch?
  • A.Sand is too dark
  • B.Soil holds the water and food that roots need
  • C.Soil is drier than sand
2.Why is river water cleaned before it comes out of the faucet?
  • A.River water is too cold
  • B.River water can carry mud and germs that make people ill
  • C.Cleaning makes it taste salty
3.Why are sandbags piled up when a river is about to flood?
  • A.Sandbags float on top of the flood
  • B.Wet sand is heavy and packs tight, so it holds back water
  • C.Sand drinks up the whole river
4.Why are old walls often built from blocks of hard rock?
  • A.Hard rock lasts a long time in wind and rain
  • B.Hard rock is soft to touch
  • C.Hard rock floats
5.Why is salt spread on icy roads in winter?
  • A.It makes the ice melt, so the roads are less slippery
  • B.It makes the roads shine
  • C.It feeds the plants by the road
6.Why is the hearth around a fireplace made of stone?
  • A.Stone keeps the fire out of sight
  • B.Stone is the softest material
  • C.Stone does not burn and can take great heat
7.Why is sand put under the swings in a playground?
  • A.Sand makes the swings faster
  • B.Loose sand is soft to land on
  • C.Sand keeps the swings dry
8.Why do potters add water to dry clay?
  • A.Water makes clay harder
  • B.Wet clay becomes soft enough to shape
  • C.Water changes clay into sand

LessonPrint · 2-PS1-2 · Set 23 · free to copy for classroom use

Answer key — Earth Materials at Work

Set 23. Prints on its own sheet.

  1. 1.Soil holds the water and food that roots need
  2. 2.River water can carry mud and germs that make people ill
  3. 3.Wet sand is heavy and packs tight, so it holds back water
  4. 4.Hard rock lasts a long time in wind and rain
  5. 5.It makes the ice melt, so the roads are less slippery
  6. 6.Stone does not burn and can take great heat
  7. 7.Loose sand is soft to land on
  8. 8.Wet clay becomes soft enough to shape

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