EARTH & SPACE
What planet do we live on?
earth
What organ pumps blood around the body?
heart
What state of matter is ice?
solid
What force pulls objects toward Earth?
Gravity
What is the largest planet in our solar system?
Jupiter
What star is at the center of our solar system?
the sun
What gas do humans need to breathe?
oxygen
What state of matter is water?
liquid
What energy comes from the Sun?
Solar energy
What animal is known as the fastest land animal?
Cheetah
What natural object orbits the Earth?
the moon
What organ controls your thoughts and actions?
brain
What state of matter is air?
gas
What happens when you drop a ball?
It falls down
What part of your body has the most bones?
Hands
Why do we have day and night?
Earth rotates
What might happen if your lungs stopped working properly?
The body would not get enough oxygen
What happens to ice when it is heated?
It melts
Why is it easier to slide on ice than on concrete?
Ice has less friction
What natural event causes lightning?
Electricity in clouds
Why can humans live on Earth but not on the Moon?
Earth has air and water
How do the heart and lungs work together during exercise?
Lungs get oxygen, heart moves it faster
Why does gas spread out to fill a room?
Gas particles move freely
Why does a bicycle slow down when you stop pedaling?
Friction and air resistance
What material is stronger than steel but lighter?
spider silk