Space Physics Quiz

What causes the day and night cycle on Earth?

• Earth's rotation on its axis
• Earth's orbit around the Sun
• The Moon's phases
• The tilt of Earth's axis

Which direction does Earth rotate when viewed from above the North Pole?

• Clockwise
• Anticlockwise
• North to South
• East to West

What phenomenon occurs when a hemisphere is tilted towards the Sun?

• Autumn/Winter
• Spring/Summer
• Equinox
• Solstice

During which event are day and night of equal length globally?

• Summer Solstice
• Winter Solstice
• Equinox
• Perigee

What is the average orbital speed of Earth around the Sun?

• 29,800 m/s
• 47.9 km/s
• 5.4 km/s
• 107,000 km/h

What type of planets are Mercury, Venus, Earth, and Mars classified as?

• Gas giants
• Dwarf planets
• Rocky planets
• Ice giants

What is the primary reason for the difference in composition between inner and outer planets?

• Distance from the Sun
• Size of the planets
• Presence of moons
• Orbital speed

What is the formula to calculate the average speed of an orbiting body?

• v = d / t
• v = 2πr / T
• v = m / a
• v = F / m

What does the Hubble constant measure?

• The speed of light
• The age of the universe
• The expansion rate of the universe
• The distance of stars

How do scientists measure the speed of galaxies moving away from Earth?

• By measuring their brightness
• By observing redshift
• By calculating their distance
• By using telescopes