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6 2023年度 英語
防衛医科大学校 -看護
marine organisms like squid or jellyfish that get around in a similar
移動する
way.
(10)
aquarium
Then, one by
The researchers began their study, which was published Wednesday)
(in Royal Society Open Science, by liberally sprinkling an
with minuscule floating particles of aluminum oxide Th
one, they put five chambered nautiluses into the tank, and let them
jet about.[/
that
//In
the
They used high-speed cameras, a laser that lit up the particles
software that could record the particles' movements.
constellation of specks, they saw the animals sucking in water, then
forcing out in the direction they were moving away from, with the
pocket of ( 11 ) water and the nautilus shooting apart at velocities
they could readily calculate. [[
om.)
When they ran the numbers, the researchers saw that the nautilus
was able to use 30 to 75 percent of the energy it transferred to the
to move.
ater to
>
it 後置修飾
That was much higher than other similar swimmers. "Squid, they
tend to be about 40 to 50 percent efficient," said Dr. Askew.
Bell-shaped jellyfish, which pulse their bells to squirt out water, also
tend to have lower than 50 percent efficiency.
問7 下線部(7) the chambered nautilus とは何かを選びなさい。
(1) ダイオウイカ
(2) ジュール・ベルヌの 「海底二万マイル』 に出てくる潜水艦
(3) オウムガイ
(4) アンモナイト
