Water changes from a liquid to a gas during this process.
What is evaporation?
This river is the longest in the United States, flowing over 2,300 miles.
What is the Missouri River?
This brother and sister duo are the main characters who go on adventures in the Magic Tree House.
Who are Jack and Annie?
This "king" of the dinosaurs had teeth the size of bananas.
What is Tyrannosaurus rex?
Once considered the ninth planet, this dwarf planet shares its orbit with icy objects in the Kuiper Belt.
What is Pluto?
This type of rock forms from cooled lava or magma.
What is igneous rock?
This U.S. state is known as the “Sunshine State.”
What is Florida?
Jack’s favorite subject, which helps him solve many problems during their adventures.
What is reading or books?
Despite its name meaning “three-horned face,” this herbivore had only two true horns above its eyes.
What is Triceratops?
This planet spins on its side and has rings that go vertical compared to the rest.
What is Uranus?
This process breaks down rocks into smaller pieces, often caused by wind, water, or ice.
What is weathering?
This U.S. state is so famous for potatoes that it even puts them on its license plates.
What is Idaho?
this helpful character gives Jack and Annie missions to complete during their adventures.
Who is Morgan le Fay?
This enormous, long-necked dinosaur could grow over 80 feet long and weighed as much as 10 elephants.
What is Brachiosaurus?
This planet has a day longer than its year and is covered in thick clouds of acid.
What is Venus?
he primary cause of tides on Earth’s oceans
What is the Moon’s gravity?
This U.S. state contains the southernmost point in all 50 states.
What is Hawaii?
in the first book, Jack and Annie travel back to this ancient civilization
What is Ancient Egypt?
Paleontologists believe this dino may have had feathers and was the inspiration for birds.
What is Velociraptor?
what is the name for the biggest moon of saturn
what is Titan
this liquid layer inside the Earth is made of molten iron and nickel and lies just below the mantle.
What is the outer core?
The United States bought this large area from France in 1803, doubling the size of the country.
What is the Louisiana Purchase?
The Magic Tree House series was written by this author.
Who is Mary Pope Osborne?
This group of flying reptiles lived with dinosaurs but weren’t actually dinosaurs.
What are pterosaurs?
This invisible boundary marks where the Sun’s solar wind is stopped by the interstellar medium, often considered the edge of the solar system.
What is the heliopause?