Practice Test 6 - 3rd Grade Science

20 questions. Answer them in any order, then submit to see your score and every explanation.

During migration, Canada geese fly in a V-shape and take turns leading; what shows a group?
Use these observations to argue herds help zebras survive: lone zebra was killed; herd of 50 escaped; lookouts spot lions early.
Read about the paper airplane challenge in the gym. A successful plane must fly at least 15 feet, land gently, and be made from 1 sheet of paper in under 5 minutes. What are the criteria for a successful paper airplane?
A class wants a pet that is active during class, easy to care for, and interactive. Option A: hamster is active in the day, eats cheap pellets, cage cleaned weekly, can be held. Option B: fish is visible all day, fed daily, tank cleaned monthly, cannot be held. Option C: hermit crab hides often, needs special food, easy care, can be held. Based on the criteria, which option should students choose?
Sofia saw woolly mammoth fossils in a place that is warm today. Mammoths had thick fur and lived in cold climates. What does this fossil evidence tell us about the past environment?
Sofia used a website and notes; what is typical for the Amazon climate?
A swing stops after 10 s with a gentle push, 20 s with a medium push, and 30 s with a strong push. Based on the pattern, how long for a very strong push?
A school needs shade within 1 year, under $300, lasting 3+ years. Idea A: plant 1 tree for $100 (shade in 5 years). Idea B: umbrella for $200 (shade now, lasts 2-3 years). Idea C: shade sail for $400 (shade now, lasts 10 years). Which option should students choose?
Chen raised butterflies from the same caterpillar group. Group 1 grew at 80°F and Group 2 grew at 60°F. Observations: 80°F butterflies had bright orange wings; 60°F butterflies had dull orange wings. According to the evidence, what can you conclude about temperature and wing brightness?
In 2015, a heat wave caused 24 heat deaths; after 10 cooling centers opened, a similar 2018 heat wave had 3 deaths, and 2,847 people used centers. Using the evidence, what claim about cooling centers is supported?
A toy car is sitting still. Then you push it and it starts moving forward. Are the forces on the car balanced or unbalanced after the push?
In tug of war, both teams pull equally and the rope does not move. Which evidence shows the forces are balanced?
Students drop a ball from $2\,m$ and measure the 1st, 2nd, 3rd, and 4th bounce heights to find a pattern. How should students record?
In a hot, dry desert with little water and few cacti, which organism survives well?
Sofia read July weather data for Texas: highs 92–98°F, lows 75–80°F, 25 sunny days, and only 3 thunderstorm days. What weather pattern is typical for this summer month?
Amir's rabbit has long ears like its parents. When Amir fed it healthier food, its fur became softer. Which trait is inherited?
A rubbed balloon stuck to a wall. At time 0 it held 15 g, after 1 minute 12 g, after 3 minutes 8 g, and after 5 minutes 3 g. Explain why.
A swing is hanging still. Then a student pushes it and it starts moving. Why did the swing start moving?
Wild dog study: alone catches prey 10% and travels 20 km; pack of 8 catches 50% and travels 10 km, feeds pups. Which argument uses evidence correctly?
Meerkats eat in an open area while one watches for hawks and snakes; when it alarms, all run. Why is this an advantage?

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