IG Phy – Obital Speed (I)

Question 1 of 10

1 point(s)

The average orbital speed v of an object in an orbit can be calculated using the formula v=T2πr.

true
false

Question 2 of 10

1 point(s)

Mercury has the highest mean surface temperature among all the planets listed in Table 6.1.

true
false

Question 3 of 10

1 point(s)

The orbital period of Neptune is approximately 59,800 Earth days.

true
false

Question 4 of 10

1 point(s)

The mean surface temperature of Earth is 15°C.

true
false

Question 5 of 10

1 point(s)

Jupiter has a higher surface gravitational field strength than Saturn.

true
false

Question 6 of 10

1 point(s)

The speed of light in a vacuum is 3.0×108 m/s.

true
false

Question 7 of 10

1 point(s)

The surface gravitational field strength of a planet depends on its mass and radius.

true
false

Question 8 of 10

1 point(s)

At the position of the Moon, the field strength is about 0.0028 N/kg.

true
false

Question 9 of 10

1 point(s)

The Moon orbits the Sun directly, not the Earth.

true
false

Question 10 of 10

1 point(s)

As the distance from the Sun increases, the Sun\’s gravitational field strength increases.

true
false

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