Osaka Public High School Entrance Examination - Science case studies
Osaka Public High School Entrance Examination - Science · Put your knowledge to work in context.
The Osaka Public High School Entrance Examination science section is the science component of the admission selection used by Osaka Prefecture's public (prefectural and municipal) high schools. Candidates are usually students completing compulsory education who are applying for first-year entry, though the examination also serves other applicant categories. The Osaka Public High School Entrance Examination - Science case studies are 5 cases and about 2,482 words.
1The Ball That Would Not Go Further
A steel ball is released from rest and rolls down a smooth ramp, then slides along a rough horizontal wooden floor until it stops. The ball is released from a height of 0.20 m above the floor, measured vertically.
463 words, about 2 min2Three Flasks of Burning Magnesium
In a class experiment on the combustion of magnesium, students burn pieces of magnesium ribbon inside sealed glass flasks. Earlier careful measurements established that 3.0 g of magnesium combines exactly with 2.0 g of oxygen, with nothing left over when those amounts match.
506 words, about 3 min3Red Flowers in a Shady Corner
A gardener keeps a population of a flowering plant in which flower colour is controlled by a single gene with two alleles: R gives red flowers and is dominant over r, which gives white flowers. Cross A (red × red) produced 78 red and 26 white offspring.
506 words, about 3 min4Reading a Cliff Without a Diagram
A coastal cliff exposes five units, described from the bottom upwards; no unit has been overturned, so lower means older. Unit 1 is a limestone packed with coral fossils.
576 words, about 3 min5The Switch That Changed the Circuit
A student builds a circuit using a 6.0 V battery of negligible internal resistance, a 10 Ω resistor R1, a 15 Ω resistor R2, an ammeter that reads the current leaving the battery, and a voltmeter connected across R2. With switch S open, the current leaves the battery, passes through R1 and then through R2 in a single loop back to the battery.
431 words, about 2 min