Practice Test 10 - 3rd Grade Science
19 questions. Answer them in any order, then submit to see your score and every explanation.
- Two balloons rubbed on hair are held close, not touching, and push apart. Why?
- Look at the water filter project description. Design a filter to remove dirt from dirty water. Students can use only coffee filters, sand, gravel, and plastic bottles, and must finish during a 40-minute science period. They must use items the teacher already has and cannot go shopping. According to the description, what limits how students can solve this problem?
- To track Texas summer weather, which method will give the most accurate temperature data?
- All are sunflowers (same species); which statement best describes their variation?
- Two flowers from the same seeds grew in different conditions. One was watered daily and had big bright petals; one got little water and had small wilted petals. The petals became smaller because the flower had
- The claim is saltwater fish and sea turtles survive in the ocean, but freshwater fish cannot. Which argument uses evidence to support the claim?
- A stream is muddy from soil washing in. Evidence: fish fell from 100 to 40, and flooding increased to 3 times last year. Solutions: (A) Plant bank trees—70% less erosion, $1,000, takes 1 year. (B) Concrete walls—100% less erosion, $10,000, hurts habitat, no flooding help. (C) Gravel—$2,000, temporary, doesn't stop erosion source. (D) Rain gardens—absorb 80% runoff, $800, reduces flooding. The evidence shows that A + D is better than B because
- The claim is polar bears thrive in the arctic, but tropical parrots cannot. Based on the evidence provided, which argument is strongest?
- Amir tracked December weather daily: date, high/low °F, snow inches, clouds; what table fits best?
- The claim is polar bears thrive at -40°F, but tropical parrots cannot; use evidence to argue.
- Carlos has brown eyes like his parents. Which statement compares trait types?
- Bean plant: seed→sprout→plant→flowers→beans. Butterfly: egg→caterpillar→chrysalis→adult. What is similar?
- Amir tests a marble on a ramp in the classroom. He asks, "Do different push forces change how far the marble travels?" He starts the marble from the same place and pushes softly, then harder. What should Amir change to test how force affects motion?
- Compare San Francisco and St. Louis: which place has a bigger temperature range?
- All are sunflowers (same species). Even so, they differ in which characteristics?
- Read about the design. Amir's water bottle rocket uses taped-on fins. During flight, the fins sometimes fall off and the rocket spins down. What might go wrong during this test?
- Read about the design. Marcus builds a solar oven with foil and plastic wrap. Sometimes the wrap is loose, so warm air escapes. What is one way this design could fail?
- Sunflower: seed→sprout→plant→flower→seeds. Chicken: egg→chick→adult→eggs. What is different?
- Read about the paper airplane challenge. Chen must make a plane from 1 sheet of paper in under 5 minutes. A successful plane flies at least 15 feet and lands gently without crashing. What are the criteria for a successful paper airplane?