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Grade 4 Science Worksheet

Circle the answer.

1. 1.

   A student says, "Cooler A is best because it kept ice the longest." Cooler A costs $30; the budget is $10. What is wrong with her claim?

   • budgets do not matter in design
   • Cooler A kept ice the shortest time
   • keeping ice is not a criterion
   • it ignores the cost constraint
2. 2.

   Filter 1 uses sand and gravel. Filter 2 uses sand, gravel and charcoal. Filter 2's water smelled better. What can the class conclude?

   • gravel alone fixed the smell
   • sand made the water smell worse
   • adding charcoal improved the smell
   • both filters were exactly the same
3. 3.

   Car A: 6 m, then 6 m, then 6 m. Car B: 9 m, then 2 m, then 7 m. Both averaged 6 m. Which is more reliable, and why?

   • they are the same, because the averages match
   • Car A, because its results stayed the same
   • Car B, because its average is higher
   • Car B, because it once went 9 m
4. 4.

   Filter A: very clean water, costs $8. Filter B: clean water, costs $3. Both meet the "clean water" criterion. Budget: $5. Which is the best choice?

   • neither, because both cost money
   • Filter A, because it costs more
   • Filter A, because it is the cleanest
   • Filter B, because it is clean enough and within budget