Investigate Tides
The sea level rises and falls every day. These changes are called tides. Tides happen because of the gravitational pull of the Moon and the Sun on Earth's oceans. The Moon has the strongest effect because it is much closer to Earth.
Explore Tides
The ocean’s tides rise and fall every day, but have you ever wondered what causes them? The Moon and Sun both play a role in shaping the movement of water across the Earth.
Annie Maunder
Occupation
Mathematician, Astronomer
Year born
1868
Research Areas
The Sun, Sunspots, Magnetic Storms
Eclipses
An eclipse is when objects in space line up. One object moves into the shadow of the other.
Investigate Day and Night
On Earth, night follows day and day follows night. But why?
Complete this fun investigation to find out!
Our Sun Quiz
The Sun is our closest star and the centre of our Solar System. However, it is only one of several billion stars in our galaxy.
Why Do Shadows Change Over Time?
Have you noticed that your shadow changes over time? The cartoon on this page shows why shadows change during the day.