How old?
65 million years ago
True or false: Animals and dinosaurs lived on earth together for 500,000 years.
False: Dinosaurs and humans never lived at the same time.
True or false: Dinosaurs first appeared 100 million years ago.
False! They appeared 225 million years ago.
What do scientists believe caused the dinosaurs to go extinct?
Scientists believe that a meteor impact and dust in the atmosphere caused the dinosaurs to die.
True or false: Humans appeared on earth about 1 million years ago.
True!
True or False: Scientists believe they have discovered about 50% of all dinosaurs that existed.
False: Of the millions of dinosaurs that must have lived, we only know about a few thousand.
How long ago did earth begin?
4.6 billion years ago.
Did dinosaurs walk on 2 legs or 4 legs?
Some dinosaurs walked on two legs and some walked on four legs.
How long ago did primitive life forms begin?
3.6 billion years ago
Name 3 species of dinosaurs.
Many possible answers.