Practice Test 12 - 1st Grade Science
20 questions. Answer them in any order, then submit to see your score and every explanation.
- Read about Marcus. The shoes stayed in the back of closet. In the dark, he could not see them. When the flashlight shined, he could see them. What changed?
- During sharing time, Sofia shows her crayon box that kept getting mixed up. It is a small box with three long dividers inside and a lid. Sofia points to the dividers and says, "The dividers make little sections." She adds, "The sections keep each color in its own space." She says, "That helps because the crayons don't get mixed together." Sofia closes the lid and shakes it a little to show they stay put. Her friend nods and says, "Oh, so each crayon has a spot!" According to Sofia, how do the dividers help solve the problem?
- Read about Emma's flashlight code. What does 2 flashes mean?
- In the classroom, crayons and markers get mixed up every day. Kids waste time looking for the right color. Emma asked, "When does the mix-up happen most?" Jamal asked, "Where do we put crayons after art?" Sofia asked, "Who uses this bin the most?" Their questions help them get information about the problem. Why are they asking questions about the problem?
- On the playground, some kids have trouble on the climbing bars. Chen, Maya, and Amir want to make recess better. They watch the bars for two recesses and count how many kids slip. They write down when it happens, like before lunch or after lunch. They also ask kids what part feels hard to hold. They note where kids slip most, like the middle bar. They find out slipping happens 6 times, mostly after lunch. How are the children gathering information about the problem?
- Amir plays outside after dinner. In summer it is still light, but in winter it is already dark. What is true about daylight?
- Read about Jamal. Curtains closed, he could not see books. He opened curtains and sunlight came in. Why could Jamal not see the books at first?
- Emma looked for stars for 3 nights and 3 days. Nights: stars seen. Days: no stars seen. Based on the pattern, when will she see stars again?
- Chen keeps dropping crayons when carrying them to the rug. In his drawing, he makes a tray shape with raised edges on all sides and labels "edges." How do the raised edges help solve the problem?
- A woodpecker pecks tree bark. Why does it need its beak?
- In the classroom, Jamal carried books on a tray, but they slid off. He built a tray with raised edges all around and a wide base. Jamal said, "The raised edges are like little walls that stop the books from sliding off, so I can carry them safely. The wide base makes it steady, so it doesn't tip." His friend tried it and the books stayed on. How does Jamal explain how the shape helps?
- Read how Jamal built a dinner bell. Does it use sound?
- Read how Sofia improved her flag signals. Test showed the flags did not work at night because it was too dark. She added glow sticks to the flags and tested again at night. Her friend saw the glowing flag and answered "yes." Did the improvement solve the problem?
- Read how Chen improved his drum code. Original device: 3 fast taps meant "stop." Test showed one worker near a loud saw could not hear the drum. Problem: the drum sound was covered by noise. Chen added a red flag on a tall pole and waved it with 3 taps. New test: all workers saw the flag and stopped. What did Chen learn from testing that led to improvement?
- Look at Yuki's table. What pattern do you see?
- Carlos writes: summer sunrise 6:05 am, sunset 8:10 pm; winter sunrise 7:35 am, sunset 5:05 pm. Which statement is true?
- Read about Sofia's build: 2 bright flags and tape; wave=play now, hold up=yes, put down=not now; they tested across the yard. What did Sofia build?
- Amir's groups: Lets Through—clear bottle, clear ruler, plastic wrap; Some Through—wax paper, tissue, white cloth; Blocks—cardboard, wood block, book. Which materials affected light the same way?
- Read about Sofia. In the dark, she could not see her toy car. When she turned on a flashlight, she could see it. What did Sofia need to see the car?
- Amir, Maya, and Marcus review results: Design A had 2 of 3 books fall; Design B had 0 of 3 fall. They say both designs carried 3 books, but one kept them on better. They use the data to compare. Based on the data, which design kept books on better?