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by BlastRoom
Explore how weathered rock and decayed plant and animal remains slowly become soil.
#soil#us_grade_3_science
20 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
What is soil mostly made of?
Rain falls on a rock ledge year after year. What slowly happens to the rock?
A desert rock gets almost no rain, but after many years it is worn smooth. What most likely wore it away?
Water fills a crack in a mountain rock and freezes every night in winter. What does the ice do to the rock?
A tree's roots grow down into a crack in a rock and get thicker each year. What happens to the rock?
Rocks tumble along a fast stream for many years and become small, smooth, and round. What made them that way?
Dead leaves fall on the forest floor and rot there year after year. What do they become part of?
Rosa looks at a scoop of soil and sees sand, clay, and bits of decayed leaves. Which part was once living?
Where did the grains of sand in a scoop of soil come from?
Which part of soil is made of the tiniest pieces of rock and feels smooth and sticky when it is wet?
Weathering can take many years to break a large boulder into small pieces.
A boulder left outdoors stays exactly the same no matter how many years pass.
Soil under a forest keeps forming as new leaves rot into it each year.
About how long does it take for a thick layer of new soil to form?
A pile of broken rock pieces sits where leaves fall and rot on it for many years. What will the pile become?
A farmer piles cut grass and dead leaves in a field corner every fall. What will be under the pile after several years?
On a mountain where nights freeze and days thaw, water in a crack splits a rock apart. Why does the freezing water push the rock apart?
A wooden fence post rots in the ground and slowly crumbles away. What does the rotting wood add to the soil?
A student sorts a soil sample into a rock pile and a once-living pile. Where does a bit of rotted root go?
Ice, wind, and water keep breaking a rock cliff into smaller and smaller pieces. What will those pieces help make?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
Fast Changes to Earth's Surface
20 questions
