Question

question 24 (multiple choice worth 3 points)
oss.06tyra designed an experiment to demonstrate an annular solar eclipse. the steps of the experiment are listed below.

• place a light bulb on a stand.
• stick a pencil into a small styrofoam ball.
• switch on the light bulb and darken the room.
• stand facing the light bulb.
• hold the pencil with styrofoam ball very close to the eye.
• observe the light bulb without moving the eye and styrofoam ball.

tyra’s experiment has a flaw. which of these statements best describes a method to correct the flaw in tyra’s experiment?

options:

• place the light bulb behind the observer.
• clamp the styrofoam ball behind the light bulb.
• move eye towards the right to observe the light bulb.
• hold the styrofoam ball at arm’s length from the eye.

Explanation:

To demonstrate an annular solar eclipse, the styrofoam ball (representing the moon) should be at an appropriate distance from the eye (representing the Earth) relative to the light bulb (representing the sun). Holding the styrofoam ball very close to the eye is incorrect. Holding it at arm's length (a more appropriate distance) would better simulate the positions: sun (light bulb) - moon (styrofoam ball) - Earth (eye), with the moon at a distance where it doesn't fully cover the sun, creating an annulus. The other options either change the setup incorrectly (placing light behind observer, clamping ball behind light) or don't address the distance flaw (moving eye).

Answer:

D. Hold the styrofoam ball at arm’s length from the eye.