Question

utilise linformation ci-dessous pour répondre à la question suivante.
létoile polaire (létoile du nord) est située directement au-dessus du pôle nord géographique de la terre, et cest la seule étoile dans le ciel qui ne semble pas bouger.
le diagramme ci-dessous montre lemplacement de la grande ourse par rapport à létoile polaire un soir de printemps. lemplacement de la grande ourse au même moment de la journée en été, à lautomne et en hiver est représenté par les points w, x, et y respectivement.

emplacement de la grande ourse pendant les quatre saisons

1. lequel des diagrammes suivants montre la position de la grande ourse quand on la regarde au point x un soir dautomne?

a.
b.
c.
d.

Explanation:

Analyze the orientation of the Big Dipper

The Polaris (Étoile Polaire) is at the center of rotation. The Big Dipper (Grande Ourse) rotates counterclockwise around Polaris over the course of the year. In spring (Printemps), the Big Dipper is at the top, oriented horizontally with its bowl facing downwards/leftwards (like an upside-down cup).

Determine the rotation angle for autumn

Autumn (Automne) is represented by point X, which is directly below Polaris. This position is a \(180^\circ\) rotation (half a turn) around Polaris from its spring position.

Rotate the shape by 180 degrees

Rotating the spring shape by \(180^\circ\) (or upside down) changes its orientation:

• In spring, the "handle" extends to the right, and the "bowl" is on the left, facing downwards.
• Rotating this shape by \(180^\circ\) means the "handle" will now extend to the left, and the "bowl" will be on the right, facing upwards.

Compare with the options

Let's examine the choices:

• A: The bowl is on the right, facing downwards.
• B: The bowl is on the left, facing upwards.
• C: This is identical to the spring orientation (bowl on the left, facing downwards).
• D: The bowl is on the right, facing upwards. This matches a perfect \(180^\circ\) rotation of the spring shape.

Answer:

• (A)
• (B)
• (C)
• (D) (Correct answer)