Glossary terms
To spin on its own axis on the spot
What causes day and night?
The Earth rotating (spinning) on its axis once
What is a solar eclipse?
When the moon is between the Sun and the Earth.
Identify the main cause of tides on Earth
The gravitational pull of the Moon
What are seasons used to describe?
Changes in weather patterns
Changes in the amount of hours of daylight
changes in animal and plant behaviour
Define revolution or orbit
To move around something (circle around)
What causes a month?
The moon orbiting (revolving) around the Earth once
What is a lunar eclipse?
When the Earth is between the Sun and the Moon
Occurs during new and full moons
have the greatest tidal range
Earth, Moon and Sun are all aligned
What are the three causes for the changes in season?
- Tilt of the Earth
- Revolution of the Earth
- Intensity of Sunlight directed at specific parts
Define heliocentric
What causes a year?
The Earth revolving (orbiting) around the Sun
2 questions:
1. Does a solar eclipse happen during the day or the night?
2. What moon phase can a total solar eclipse occur during?
Only during the day, during a new moon
Explain Neap tides
Sun, Earth and Moon are at right angles to each other
Tidal ranges are the smallest
If it is summer in the southern hemisphere, what season is it in the Northern hemisphere?
winter
Define geocentric
Earth centred solar system
Day or night for a lunar eclipse and what moon phase?
Night, Full moon
Why might scientific models change over time?
New technology is developed
New evidence becomes available
Define umbra and penumbra
Umbra - darkest shadow in the centre of the eclipse
penumbra - lighter shadow on the outsides of the eclipse
The Moons orbiting Jupiter
Venus had phases similar to the Moon