Rainforests help the Earth's climate by absorbing carbon dioxide. What does ABSORB mean?
to plant trees
to take something in or soak it up
to push something out
Tropical rainforests are very dense forests that are full of trees. What does DENSE mean?
contains a lot of things or people in a small area
extremely important
almost empty
Walking on the moon was a significant moment in history for many Americans because no other person or country had landed on the moon prior to this event. What does SIGNIFICANT mean?
important
disgraceful
sad
boring
The Earth is tilted because of a giant collision 4.5 billion years ago. A Mars-sized object is thought to have crashed into young Earth. What is a COLLISION?
when two things crash into one another
a race
an enormous planet
The old wooden building started to collapse after the heavy storm weakened its walls. What does COLLAPSE mean?
to destroy
to build something very strong
to fall over, cave in, or crumble
Hundreds of years ago, sailors used to use constellations to navigate their ships at night.
to analyze the constellations
to drive or maneuver
to stargaze
Gorillas use gestures, body language, facial expressions, sounds, chest slaps, and drumming to communicate what they are thinking. What is a GESTURE?
somersaults
the alphabet
texting
signs or signals you make with your body
He has numerous rocks in his collection. He has been collecting rocks since he was 4! What does NUMEROUS mean?
special
a few
important
many
The color of human skin is determined by a substance called melanin. What does the word DETERMINED mean in this sentence?
burned by
painted by
caused by
Hibernation is when an animal becomes inactive, or sleeps, during the short, cold days of winter. What does INACTIVE mean?
bored
energetic
excited
not active
Did you know that popsicles were invented by accident? In 1905, an eleven year old boy named Frank Epperson who lived in San Francisco unintentionally invented them. What does UNINTENTIONALLY mean?
on purpose
on accident or without trying to
Cats also have flexible backbones and no collarbone. This is important because it reduces the amount of damage cats get when they fall from something tall. What does REDUCE mean?
to make something larger
to make something strong
to make something more dangerous
to make something smaller
