Gravity and Tides
The force that pulls objects toward each other and causes tides.
What is gravity?
What object is the main cause of tides?
What is the Moon?
What is a high tide?
What is when ocean water rises to its highest level
What causes daily tides?
What is Earth’s rotation and the Moon’s gravity
How long does it take for Earth to rotate once, affecting daily tides?
What is about 24 hours?
The ocean bulges caused by gravitational pull.
What are tides?
The Moon causes how many high tides per day.
What is two?
What is a low tide?
What is when ocean water falls to its lowest level
How many high tides usually occur each day?
What is two?
The difference between high tide and low tide.
What is the tidal range?
The two main objects whose gravity affects Earth’s tides.
What are the Moon and the Sun?
Why does the Moon affect tides more than the Sun, even though the Sun is bigger?
What is because the Moon is much closer to Earth.
The tide with the greatest difference between high and low tide.
What is spring tides?
During which moon phases do spring tides occur?
What is full moon and new moon?
True or False: The Moon’s gravity only affects the side of Earth facing it.
What is false?
Why the Moon has a stronger effect than the Sun.
What is because it is closer to Earth?
What happens to ocean water on the side of Earth closest to the Moon?
What is bulges, creating a high tide?
The tide with the smallest difference between high and low.
What is neap tide?
During which moon phases do neap tides occur?
What is first and third quarter moons?
If tides are weak and not very different, what moon phase is likely?
What is first and third quarter?
The name for the pull that stretches Earth’s oceans.
What is gravitational force?
Why is there also a high tide on the side of Earth opposite the Moon?
What is inertia causes water to bulge on the opposite side
When do spring tides and neap tides occur?
What is when the Sun, Moon, and Earth are aligned. What is when the Sun, Moon, and Earth are at a 90 degree angle.
What happens when the Sun and Moon pull in different directions?
What is weaker tides (neap tides)?
A coastal town notices unusually extreme high and low tides. The Moon is full. Explain what is happening and why.
What is because it is a spring tide where the Sun, Earth, and Moon are aligned during a full moon, combining gravitational forces to create stronger tides.