No, Zeus is not the son of Gaea and Ouranos, he is their grandson from their Titan children Cronus and Rhea.
The youngest and most powerful of Uranus and Gaea's Titan children is Cronus. He overthrew his father Uranus and ruled during the Golden Age in Greek mythology, before being overthrown by his own son Zeus.
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In Greek mythology, the son of Gaia (Gaea) is Uranus, the personification of the sky and heavens. Uranus is also the husband of Gaia, and together they are the parents of the Titans and other powerful beings in Greek mythology.
Apollo is the son of Zeus and Leto, and the twin brother of Artemis. He is thus related to all children of Zeus, and Zeus's ancestors, such as the Titans, Ouranos, and Gaea.
Cronus is Zeus's father in Greek mythology. He was a Titan who overthrew his own father, Uranus, and then was later overthrown by Zeus, his son, in a similar fashion.
Her youngest son, Cronus, the King of the Titans and father of Zeus.
Ares is the son of Zeus and his sister-wife Hera, both born of Cronus and Rhea, born of Gaea and Uranus. Any child of Zeus he is brother of, any sibling of Zeus or Hera he is nephew of. He is the great-grandson of Gaea and Uranus, personifications of earth and heaven.
They made the Titans (Cronus, Oceanus etc),three Hecatonchires, Cyclopses and Echidna the mother of all monsters.
Kronos was the youngest and most powerful of Uranus and Gaea's Titan children. He ultimately overthrew his father, Uranus, and became ruler of the Titans before being overthrown himself by his own son, Zeus.
The youngest and most powerful of Uranus and Gaea's Titan children is Cronus. He overthrew his father Uranus and ruled during the Golden Age in Greek mythology, before being overthrown by his own son Zeus.
Leto, their mother, her parents (their grandparents) Koios and Phoebe. Asteria, sister of Leto. Zeus, their father, his parents (their grandparents) Rhea and Cronus. Hades, Poseidon, Hera, Hestia, Demeter, his siblings. Any son or daughter of Zeus would be their half sibling including: Ares Hephaestus Hermes Athena Dionysus
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(*Helios) Hyperion
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Cronus, the father of Zeus, was the son of Uranus. Thus, Uranus is the grandfather of Zeus.
His son Cronus/ Κρόνος was the person who overtrhrew Uranus with the help of his mother Gaea.
her son, the giant Porphyrion