gas
A form of matter that can move about freely and does not have a definite shape.
Water vapor is a gas and can move through Earth's atmosphere.
good health habits
Habits that help a person to stay well.
Getting enough rest and exercise are good health habits.
gravity
The force that causes an object to fall to earth.
When you jump up, gravity will bring you back down to earth.
H
habitat
A place in which a plant or an animal lives.
A living thing gets all the things it needs to stay alive from its habitat.
hair
Body covering of mammals.
Hair helps mammals stay warm and protects their skin.
heart
Body part that pumps blood throughout the body.
Put your hand on your heart and feel it beat.
hinged jaws
Jaws joined with a hinge-like joint so they open wide.
Hinged jaws let some dinosaurs swallow huge chunks of meat.
hollow tube
A tube with an empty space within it.
Some dinosaurs may have used the hollow tubes on their heads to make sounds.
I
insect
An animal with three main body parts and six legs.
Ants are one kind of insect found in the rain forest.
BASKETBALL gas
A form of matter that can move about freely and does not have a definite shape.
Water vapor is a gas and can move through Earth's atmosphere.
good health habits
Habits that help a person to stay well.
Getting enough rest and exercise are good health habits.
gravity
The force that causes an object to fall to earth.
When you jump up, gravity will bring you back down to earth.
H
habitat
A place in which a plant or an animal lives.
A living thing gets all the things it needs to stay alive from its habitat.
hair
Body covering of mammals.
Hair helps mammals stay warm and protects their skin.
heart
Body part that pumps blood throughout the body.
Put your hand on your heart and feel it beat.
hinged jaws
Jaws joined with a hinge-like joint so they open wide.
Hinged jaws let some dinosaurs swallow huge chunks of meat.
hollow tube
A tube with an empty space within it.
Some dinosaurs may have used the hollow tubes on their heads to make sounds.
I
insect
An animal with three main body parts and six legs.
Ants are one kind of insect found in the rain forest.
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