Question

1. what is the source of jupiter’s magnetic field?

a. a molten iron core
b. a molten cobalt core
c. a steel core
d. a metallic hydrogen core

1. how does a physical “wobble” of a moon provide evidence for an ocean?

a. a wobble means the core is liquid, so the mantle must also be liquid
b. a wobble suggests that the core is separated from the crust by a layer of liquid
c. a wobble is when the celestial body shakes, meaning it has a strong gravitational pull
d. a wobble means that a magnetic field has been generated, therefore there is an ocean

1. which of the following spacecraft is responsible for gathering the photos and data from saturn and its moons?

a. cassini
b. apollo 13
c. cassiopeia 3
d. voyager 4

1. what is the name of the current mission on the way to jupiter and its moons?

a. artemis
b. clipper
c. athena
d. hermes

1. what is the moment of inertia?

a. the amount of force it takes to start or stop a rotating object
b. the amount of force it takes to spin an object forever
c. the time an object takes to slow down to a stop
d. the moment an object stops or starts motion

1. which spacecraft explored jupiter and its moons, sending back photos and data?

a. the james webb rocket
b. the copernicus telescope
c. the galileo spacecraft
d. the aristarchus telescope

Explanation:

Question 42

Jupiter's magnetic field is generated by its metallic hydrogen core. Metallic hydrogen, under Jupiter's extreme pressure, conducts electricity and creates the magnetic field. Options a, b, c are incorrect as Jupiter doesn't have iron, cobalt, or steel cores.

A moon's wobble occurs because the crust and core are separated by a liquid layer (like an ocean). Option a is wrong (mantle isn't necessarily liquid), c misdefines wobble, d links wobble to magnetic field incorrectly.

The Cassini spacecraft was tasked with studying Saturn and its moons. Apollo 13 was a lunar mission, Cassiopeia 3 is not a real Saturn - studying spacecraft, and Voyager 4 doesn't exist (Voyager 1/2 explored other targets).

Answer:

d. A metallic hydrogen core

Question 43