What is a flood tide?
A flood tide occurs when the sea level rises as water flows toward the land, beginning after low tide and ending at high tide.
What is an ebb tide?
An ebb tide occurs after high tide, when the water level begins falling and moves back toward low tide.
Short def: It happens between high tide and low tide. 🌊⬇️
What is the intertidal zone?
The intertidal zone is the coastal area between high tide and low tide, which is sometimes underwater and sometimes exposed.
When and why does high tide occur?
Low tides happen twice a day when water is pulled toward high tide areas by the Moon and Sun. It happens twice daily due to the earths rotate, in reletivity to the moons tidal buldges.
When and why does low tide occur?
A low tide occurs twice a day, when sea levels are at their lowest. Low tide happens twice a day, as Earth rotates through the Moon’s tidal bulges.
What is a spring tide and when does it occur?
A spring tide is when the difference between high and low tide is greatest, occurring during new and full moons when the Sun, Earth, and Moon are aligned.
Short def: The biggest tides at new and full moons. 🌕🌑🌊
What is a neap tide and when does it occur?
A neap tide is when the difference between high and low tide is the smallest, occurring during the first and third quarter moons when the Sun and Moon pull at right angles.
Short def: The smallest tides at quarter moons. 🌓🌗🌊
How does the lunar cycle affect tides?
The 29.5-day lunar cycle controls tides, causing spring tides at new/full moons and neap tides at quarter moons.
Short def: Lunar phases cause spring and neap tides. 🌙🌊
How did First Nations Australians use knowledge of tides and the lunar cycle?
observed how tides followed the Moon’s phases and used this to guide fishing, hunting, safe canoe travel, and cultural practices.
What is a new moon?
When the Moon is between the Earth and Sun, the side facing Earth is dark, so we cannot see it. 🌑
What is a waxing crescent?
🌘
What is the first quarter moon?
🌗
What is a waxing gibbous?
🌖
What is a full moon?
🌕
What is a waning gibbous?
🌔
What is the last quarter moon?
🌓
What is a waning crescent?
🌒
