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what is the transit of venus?

a. when the orbit of venus crosses the orbit of earth

b.) when venus can be seen from earth and appears to be shaded by the moon

c. when venus can be seen from earth and appears to shade the sun

d. ) when venus can be seen from earth and appears to trace a path across the face of the sun

A transit of Venus across the Sun takes place when the planet Venus passes directly between the Sun and a superior planet, becoming visible against (and hence obscuring a small portion of) the solar disk. ... Transits of Venus are among the rarest of predictable astronomical phenomena.

Explanation:

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.