Earth's Orbit and Movement
When it is daytime in Victoria, it is what time in Tokyo?
Night time.
What is the approximate measurement of Earth’s axial tilt? (In degrees.)
23.5 degrees
For comparison, if Earth was the head of a pin, the Sun would be about the size of a what?
Basketball.
What is the average distance between the Sun and the Earth?
The average distance is approximately 150 million kilometers.
Romans, Greeks, Egyptians.
How long does it take for the Earth to complete one full rotation?
24 hours.
Why does Earth have seasons? What causes Earth's seasons?
The tilt of the earth.
Six.
How much of our solar system's total mass is contained in the Sun?
The Sun contains about 99% of the total mass of the entire solar system.
What is the shadow-casting part of a sun dial called?
The gnomon.
In which direction does the Earth orbit the Sun?
The Earth orbits the Sun in a counter-clockwise direction.
When it's summer in Canada, it's what season in Australia?
Winter.
What is the approximate temperature of the Sun's surface? (In Celsius.)
5,500 degrees Celsius.
How many Earths could fit inside the Sun if it were hollow?
Approximately 1 million planet Earths could fit inside.
Should the "noon" part of a sun dial be oriented towards True North or Magnetic North?
True North.
What does "heliocentric" mean in our solar system?
It means the Sun is at the center and the planets revolve around it.
Bonus: Helios means "sun" in Greek.
True or False: The Earth is closest to the Sun in January and furthest from the Sun in July.
True.
What is the approximate temperature of the Sun's core? (In Celsius.)
15 million degrees Celsius.
What is Earth’s position in order from the Sun?
Earth is the third planet from the Sun.
At what degree should the gnomon be titled or angled for the most accurate results in Victoria, B.C.? (Give answer in degrees.)
48 degrees.
How fast is the Earth traveling along its orbital path around the Sun?
It travels at 107,000 kilometers per hour; in the time it takes to blink once, the Earth moves about 30 kilometers.
Canada experiences summer when the Northern Hemisphere is tilted towards or away from the Sun?
Towards the sun.
The Sun is made up of approximately what percent Hydrogen and what percent Helium?
90% Hydrogen and 9% Helium.
At about what speed does the Sun orbit the centre of the Milky Way Galaxy?
740,000 KM.
At noon, will the shadow casted by the gnomon be long or short? Why?
Short because the Sun is directly overhead.