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Inventions and Their Side Effects is a free printable Grade 3 to Grade 5 social studies worksheet on the benefits and side effects of American inventions, aligned to C3 Framework indicator D2.Eco.8.3-5. 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 11 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.

Inventions and Their Side Effects

D2.Eco.8.3-5

NameDate

Circle the best answer.

1.Chemical fertilizers raised harvests. What can happen when rain washes them into rivers?
  • A.They make the river water cleaner
  • B.They can harm fish and other water life
  • C.They turn the water into fuel
2.The Interstate Highways let trucks carry goods fast. What was one cost?
  • A.Trucks became slower
  • B.Some city neighborhoods were torn down to build them
  • C.Railroads were all made illegal
3.Vaccines such as the polio vaccine changed medicine. What was the benefit?
  • A.Fewer people caught dangerous diseases
  • B.Doctors were no longer needed
  • C.Hospitals had to close
4.The telegraph sent news across the country in minutes. How did that help people?
  • A.They no longer needed newspapers ever again
  • B.Letters arrived a week later than before
  • C.They could learn about events the same day
5.The pesticide DDT killed insect pests. What did scientists find it also did?
  • A.It harmed birds such as the bald eagle
  • B.It helped birds lay stronger eggs
  • C.It made crops grow taller
6.The cotton gin made cleaning cotton much faster. What harmful effect followed in the South?
  • A.Slavery ended right away
  • B.Slavery spread as planters grew more cotton
  • C.Farmers stopped growing cotton
7.Big dams on Western rivers made electricity and stored water. What did they cost?
  • A.They stopped all rain in the West
  • B.They flooded valleys and blocked salmon from swimming upstream
  • C.They dried up the ocean
8.Air conditioning helped cities in hot places such as Arizona and Florida grow. What is one cost?
  • A.It stops cities from growing
  • B.It makes summers cooler outdoors
  • C.It uses a great deal of electricity

LessonPrint · D2.Eco.8.3-5 · Set 11 · free to copy for classroom use

Answer key — Inventions and Their Side Effects

Set 11. Prints on its own sheet.

  1. 1.They can harm fish and other water life
  2. 2.Some city neighborhoods were torn down to build them
  3. 3.Fewer people caught dangerous diseases
  4. 4.They could learn about events the same day
  5. 5.It harmed birds such as the bald eagle
  6. 6.Slavery spread as planters grew more cotton
  7. 7.They flooded valleys and blocked salmon from swimming upstream
  8. 8.It uses a great deal of electricity

Last reviewed 2026-09-05. Aligned to D2.Eco.8.3-5 of the C3 Framework for Social Studies State Standards.