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by BlastRoom
Students calculate energy transfer and explain why food pyramids narrow upward.
#us_grade_7_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.
A meadow's grass stores 20,000 kJ of energy. About 10% passes to rabbits. About how much energy reaches the rabbits?
An algae level has 5,000 kJ. Zooplankton receive about 10%, and small fish receive about 10% of that. How much reaches the small fish?
In a food chain, corn has 12,000 kJ. Mice get about 10% of the corn's energy. What amount is available to mice?
A grasshopper population stores 800 kJ. If frogs eat the grasshoppers, about how much energy passes to the frog level?
An energy pyramid shows producers with 30,000 kJ. Estimate the energy at the primary consumer level directly above them.
Shrubs hold 9,000 kJ. Deer receive about 10%, and wolves receive about 10% of the deer's energy. How much reaches wolves?
Plankton contains 40,000 kJ. Krill get 4,000 kJ, and penguins get about 10% of the krill energy. How much reaches penguins?
A pond has many algae, fewer tadpoles, fewer fish, and very few herons. What explains this pattern?
In a desert food pyramid, cactus plants are common, insects are fewer, lizards are fewer still, and owls are rare. Why are owls rare?
A food chain is grass → zebra → lion. Why can the grass level support many more organisms than the lion level?
An energy pyramid is wide at the producer level and narrow at the hawk level. What does the narrow top show?
A mountain ecosystem has many grasses, some marmots, fewer foxes, and one eagle pair. What limits the number of eagles most directly?
A student says, 'There are fewer snakes than mice because snakes are bigger.' What reasoning better explains the food pyramid?
Why is biomass usually greatest at the producer level of an energy pyramid?
A beetle level receives only a small part of the plant energy it eats. Where does much of the remaining energy go?
A disease kills half the phytoplankton in a lake. What is the most likely effect on the food pyramid?
After a wildfire removes much prairie grass, what population change is most likely first?
A shady algal bloom blocks sunlight from seagrass. How would this most likely affect turtles that eat seagrass?
A farm field produces twice as much wheat after a rainy season. What is a likely effect if other conditions stay favorable?
A drought reduces berry production in a forest. What outcome is most likely for bears that rely on berries and berry-eating insects?
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.
Organism, Population, Community, Ecosystem
20 questions
