Research Questions about the Earth

Why is the Earth round?

How big is the Earth?

What is inside the Earth?

What are latitude and longitude?

What is air made of?

Why is the sky blue?

Why are there redish colors at sunset?

How many colors are in the rainbow?

What are the Northern and Southern lights and where can you see them?

Why do we have seasons?

What is an equinox?

What is a solstice?

Why does it rain?

Why does the wind blow?

Why does lightning strike?

What is a hurricane?

What is a tornado?

How deep is the ocean?

How many oceans are there?

What is the continental shelf?

Why is the sea salty?

What are tides?

What is a tidal wave?

What is a whirlpool?

What is a gulf?

What is a bay?

How big are iceburgs?

What is the longest river and where is it located?

What are deltas?

What are the largest lakes and where are they located?

What is an estuary?

Where is the highest mountain?

What causes an avalanche?

What causes a volcano to erupt?

How many continents are there?

What is the equator?

Where are the tropics?

Where is the Grand Canyon?

Where is the Land of Fire?

What river flows backward over a waterfall?

Which is the world's largest country?

Which is the world's smallest country?

Where is the Black Forest?

What is Old Faithful?