The orbital period of a planet is the time it takes the planet to complete its
orbit.
The completed paragraph is present as follows;
- Mercury and Venus are closer to the Sun than Earth is, so their orbital periods are smaller than Earth's orbit. The further a planet is from the Sun, larger its orbit is
Reasons:
The formula for the orbital period is given by the relationship;
[tex]T^2 = \dfrac{4 \cdot \pi^2 \cdot r^3}{G \cdot M_{Sun}}[/tex]
Where;
r = The distance of the planet from the Sun
G = A constant value (the Universal Gravitational constant)
[tex]M_{Sun}[/tex] = The mass of the Sun
Therefore, increase in the distance of the planet from the Sun, increases the period
The completed statement is therefore;
Mercury and Venus are closer to the Sun than Earth is, so their orbital
periods are smaller than Earth's orbit. The further a planet is from the Sun,
larger its orbit is.
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