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by BlastRoom
Students use model test results to plan fair design iterations.
#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.
During each model test, a paper bridge bends most at the center and fails there. What change best responds to the data?
A filter prototype's test water stays cloudy, and notes show tiny clay particles pass through the gravel layer. What design change should the team try next?
An insulated cup model starts at 5 °C and reaches 14 °C after 20 minutes. The lid area feels warm. What improvement should be tested next?
In fan trials, a model wind turbine spins, but the tower tips over before data can be recorded. What modification should come before the next trial?
A solar oven prototype reaches only 50 °C, and warm air escapes through gaps around the clear cover. What change best targets the problem?
A backpack strap prototype holds 8 kg, but testers report high pressure on one narrow shoulder area. What change should the next iteration test?
A tabletop flood-barrier model blocks waves, but water seeps under the bottom edge in every run. What redesign should the team try?
A model shoe sole grips dry tile but slips during wet-tile tests. What feature should be changed first to meet the wet-surface criterion?
A model car rolls farther after the team changes wheel diameter and axle lubricant at the same time. What testing plan can identify which change helped?
A filter improves after sand type and pour rate both change. In a fair test of sand type, which changed factor should stay constant from trial to trial?
Students compare two truss patterns, but one model bridge has a 30 cm span and the other has a 40 cm span. What should the next fair test do?
To test helmet-foam thickness, a team also changes drop height, and impact force falls. What variable must stay constant in the next comparison?
A turbine model makes more current after blade angle and blade number both change. What next test would isolate the effect of blade angle?
A cooler prototype stays colder after insulation material and lid color both change. What is the fairest way to test insulation material?
When a model roof is sprayed with water, leaks appear only where two roof panels meet. What design weakness does the model data reveal?
A robotic gripper prototype lifts smooth blocks but drops round balls in repeated trials. What weakness should the team investigate?
In a model lunch line, students choose food quickly, but the line stops at the payment step in every trial. What is a step that slows a whole process like this called?
A wheelchair-ramp model lets the chair roll safely at 5°, but at 12° it rolls back on three trials. What weakness does the model reveal?
A rain-garden model drains from the center, but water pools along the edges after each watering test. What weakness should be revised?
A model emergency shelter stays cool, but its roof poles bend in a 15 km/h fan test. What weakness does the model data identify?
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.
Calculating Average Speed
40 questions
