|Question 27Verbal

Source Texts

Text
While researching a topic, a student has taken the following notes:
- The University of Oslo in Oslo, Norway, is home to a Foucault pendulum.
- The pendulum consists of a weighted ball that swings at the end of a roughly 14-meter-long cable.
- Like all Foucault pendulums, it dangles from a fixed point that ensures the swing path of the pendulum doesn't change.
- To an observer, the swing path of a Foucault pendulum appears to change over time because Earth rotates beneath it.
- Foucault pendulums are used as a simple way to provide evidence of Earth's rotation.
The student wants to explain how a Foucault pendulum provides evidence of Earth's rotation. Which choice most effectively uses relevant information from the notes to accomplish this goal?
The Foucault pendulum at the University of Oslo in Oslo, Norway, swings on an unchanging path, but Earth rotates beneath it.
A
A Foucault pendulum, which consists of a weighted ball at the end of a long cable, provides evidence of Earth's rotation.
B
Though it swings on an unchanging path, a Foucault pendulum appears to change its swing path over time because Earth rotates beneath it.
C
In Oslo, Norway, a Foucault pendulum at the University of Oslo provides evidence of Earth's rotation.
D