Practice Test 7 - 2nd Grade Science
19 questions. Answer them in any order, then submit to see your score and every explanation.
- Jamal built a town model. What does the blue fabric river show?
- Marcus explained his bug viewer. How does the curved magnifying top help it work?
- The SAME 7 tangram pieces made a cat, house, and boat. What changed?
- Maya will test: Do plants need water to grow? What is the test variable (what changes)?
- Marcus noticed a problem in the classroom. Finished papers pile up on desks. This makes it hard to keep work clean and safe. Marcus said, "We need an object to hold papers." What is the problem they need to solve?
- Chen looked around home. Solid (ice): ice cubes, frozen puddle, frost. Liquid (water): sink water, water in a glass, puddles. What did Chen observe that was liquid water?
- Teacher said the class needs to solve a problem: art supplies keep falling off the shelf. It makes a mess and slows down art time. Chen raised his hand: "I have questions." Which question would help Chen learn more about the problem?
- Keisha saw rain making puddles, snow on the ground, and ice cubes in her drink. What do her observations show about water?
- The SAME 8 triangle tiles made 3 designs. What stays the same and what changes?
- Marcus visited Wetleaf Nature Center. The ground is very wet with plants and puddles. What is it?
- Keisha is watching the paper towel dispenser problem. She counted towels in the morning (full roll), at lunch (half roll), and at the end of day (almost empty). She wrote the numbers down. What method did Keisha use to gather information?
- A LEGO house became a robot. What happened to the pieces?
- Yuki read an article: waves can slowly wear away a coastline over decades and centuries. Photos from 1950 and 2020 show a cliff line moved back a little. Based on the sources, what evidence shows coastline change is slow?
- Maya read: a tornado can last minutes. She compared photos: a beach cliff eroded a little after 10 years. What do the sources show?
- Keisha used a book, article, and scientist; what do the sources show?
- Yuki must recycle lots of paper and has only $0. Data: Box(A) holds 100, free; Bin(B) holds 40, costs $8. Which works better, and why?
- Look at the observations. Yuki found solid (ice): frost, snow, ice cubes. She found liquid (water): water in a glass, puddles, rain. Which examples show water as a liquid?
- Chen is trying to understand a noisy classroom problem. He listened during quiet work and it was not loud. He listened during group work and it was very loud. He counted all 6 groups talking. Which observation helps Chen understand the problem?
- Keisha tested paper, fabric, plastic, and foil to find what keeps water out. She put 3 drops on each. Results: Water soaked into paper. Water soaked into fabric. Water stayed on top of plastic. Water stayed on top of foil. What did students observe about plastic?