Question 23

Weight would be significantly different for a solid object on Mars vs. Earth.

Weight is directly affected by the force of gravity acting on an object, which is significantly lower on Mars compared to Earth. Consequently, a solid object will weigh less on Mars due to the planet's weaker gravitational pull.

A) Length

Length is a measure of distance and does not change based on the gravitational force of a planet. Therefore, a solid object's length would remain the same on both Mars and Earth, making this option incorrect.

B) Mass

Mass is a measure of the amount of matter in an object and is constant regardless of location. Since mass does not change with gravity, a solid object's mass would be identical on Mars and Earth, rendering this option incorrect.

C) Volume

Volume, which measures the space an object occupies, is not affected by gravity. An object's volume remains unchanged regardless of whether it is on Mars or Earth, so this option is also incorrect.

D) Weight

Weight is the gravitational force acting on an object's mass and varies with the strength of the gravitational field. Since Mars has only about 38% of Earth's gravity, a solid object's weight would be significantly less on Mars than on Earth, making this option correct.

Conclusion

The correct answer is D) Weight, as it is the only property that changes due to differences in gravitational pull between Mars and Earth. Length, mass, and volume remain constant regardless of location, confirming that weight is the key property that is significantly different for a solid object on Mars compared to Earth.