"Because a higher gravitational pull this close to earth would cause tides that might flood every continent," Tom explained.

But several effects can cause even higher tides.

But, instead, the teacher asks you to write a short letter to a 10-year-old explaining what causes tides.

For example, the Moon causes tides in the Earth's oceans and other big bodies of water.

The tidal force from the Moon causes tides in Earth's oceans.

Left: Black holes aren't the only things that cause strong tides.

It causes tides, convection and many other things that happen.

The main way it affects us is by causing tides.

And this object is dense enough to cause tides.

Find out how a hurricane forms, what causes tides and what's the weather like in space.