Practice Test 10 - 2nd Grade Science
19 questions. Answer them in any order, then submit to see your score and every explanation.
- Marcus asked 10 kids, and 6 said they lost something. Why did he ask questions?
- Amir observed two habitats. Compare the observations to determine which has more variety. Habitat 1 observations: Location: Class aquarium tank. Date: Oct 2. Observer: Amir. Observed: Animals seen—goldfish (1 type), snails (2 types). Plants seen—water plant (1 type). Total different types: 4. Habitat 2 observations: Location: Willow Pond. Date: Oct 2. Observer: Amir. Observed: Animals seen—frogs (3 types), fish (6 types), turtles (1 type), ducks (1 type), dragonflies (2 types), water beetles (2 types). Plants seen—cattails, lily pads, reeds, duckweed, pondweed, grasses (6 types), algae (1 type). Total different types: 25.
- Carlos saw a squirrel bury nuts in the park. How does this help plants?
- Read the assignment. Which feature should Sofia make tallest in her block model?
- Carlos created a model. What does the model represent about seed dispersal?
- Cookie dough was heated in an oven and changed from dough to a baked cookie. Can it change back?
- Original: 8 triangle tiles make a flat star. New: same 8 tiles make a pyramid. How did it change?
- Carlos created a model. What does it show about butterflies and pollen transfer?
- Emma saw messy desks. What problem could a tool help solve?
- Maya used sources: a book says mountains form over millions of years; photos from 1920 and 2020 show a cliff slowly eroding; Dr. Lee measured a glacier moving feet per year. Based on the sources, which events take a very long time?
- Students tested paper, fabric, plastic, and foil to find the best raincoat. Purpose: keep water out. Procedure: They put water drops on each material. Results: Paper—soaked in; Fabric—soaked in; Plastic—stayed on top; Foil—stayed on top. What did students observe about plastic?
- Look at plastic straw, rubber band, wooden stick, and cardboard. Which are bendable?
- Sofia noticed a problem during outdoor learning. The class watches bugs, but they crawl away fast. This makes it hard for students to see them closely. Sofia said, "We need a tool to look safely." Which statement best describes the problem?
- Look at Amir's table. What information did he record about living things?
- Yuki created a model; what does the burr model represent?
- Keisha observed the school garden. How did she make observations safely?
- Amir saw a flood; what happened to the land after water went down?
- A dog puzzle was taken apart. How many pieces are there?
- Test results: A open shelf holds 12 bins, costs $15, looks messy; B cabinet holds 10 bins, costs $35, looks neat. Principal wants the room to look neat. Which design should Keisha choose, and why?