Day & Night
What causes day and night on Earth?
Earth’s rotation on its axis.
How many degrees is Earth tilted?
23.5°.
The type of eclipse that occurs when the Moon passes between Earth and the Sun.
solar
Who proposed the heliocentric model?
Nicolaus Copernicus.
Who discovered the universe is expanding?
Edwin Hubble.
How long does Earth take to rotate once?
24 hours (one full day).
What causes the seasons on Earth?
Earth’s tilt on its axis and its orbit around the Sun.
The type of eclipse that occurs when Earth blocks sunlight from reaching the Moon.
lunar
What does the geocentric model mean?
Earth is at the centre of the universe and everything orbits it.
The surface where astronauts collected rock samples.
moon
In which direction does Earth spin when viewed from above the North Pole?
Anticlockwise.
When is the summer solstice in Australia?
Around 21st December.
Name the three types of solar eclipse.
Name the three types of solar eclipse.
Why did the Church reject the heliocentric model?
It challenged traditional beliefs that Earth (and humans) were the centre of creation.
Who were the Apollo 11 astronauts?
Neil Armstrong, Buzz Aldrin, and Michael Collins.
Why does the Sun appear to rise in the east and set in the west?
Because Earth spins west to east, so the Sun appears to move in the opposite direction.
Why do the Northern and Southern Hemispheres have opposite seasons?
Because when one hemisphere is tilted towards the Sun, the other is tilted away from it.
During which phase of the Moon does a lunar eclipse occur?
During a Full Moon.
How did Galileo’s telescope provide evidence for the heliocentric model?
He saw Jupiter’s moons orbiting Jupiter, showing not everything orbits Earth.
What was learned from Moon rock samples?
The Moon formed from debris from a collision with early Earth.
What is it called when day and night are equal in length?
equionx
The point in Earth’s orbit when one hemisphere is tilted closest to the Sun is called the ___?
Solstice
The darker, central part of an eclipse shadow is called the?
umbra
Compare and contrast the geocentric and heliocentric models.
Geocentric: Earth-centred, supported by Ptolemy/Aristotle. Heliocentric: Sun-centred, supported by Copernicus and Galileo.
The “ringed” galaxy Hubble studied to prove other galaxies exist.
andromeda