Space Physics

The motion of Earth around the Sun most affects the

• timing of tides.
• length of a month.
• cycle of the seasons.
• phases of the Moon.

What is a space rock smaller than a planet that orbits the sun?

• asteroid

• comet

• meteor

• satellite

Which moon phase is this?

• waxing half moon

• new moon

• waning gibbous

• waxing crescent

______________ improved on earlier models of the telescope to identify 4 moons of Jupiter, rings of Saturn, phases of Venus, and more to become known as the "Father of Modern Observational Astronomy."

• Copernicus
• Newton
• Galileo
• Ptolemy

Calculate the orbital speed in metres per second if the radius of orbit is 10,000 metres and the time period is 100 seconds.

• 62.83 m/s

• 628.32 m/s

• 6.28 m/s

• 6283.19 m/s

A satellite of the earth is revolving in a circular orbit with a uniform speed v. If the gravitational force suddenly disappears, the satellite will:

• Continue to move with velocity v along the original orbit

• Move with a velocity v, tangentially to the original orbit

• Fall down with increasing velocity

• Ultimately come to rest somewhere on the original orbit

A geostationary satellite orbits the Earth....

• once every 24 hours
• once every 10-11 hours
• once every week
• once every 4 weeks

Where is the planet moving faster

• Position A to B
• Position B to C
• Position H to I
• Position I to J

When the Moon is directly between the Sun and the Earth, what phase would the Moon be in?

• Full Moon

• New Moon

• Half Moon

• Waxing Crescent

Which of the following forms a star?

• Nebulae

• Supernova

• White dwarf

• Black hole