EARTH
What planet do we live on?
Earth
What do plants need from the Sun to help make their food?
Light/energy
What are the three common states of matter?
Solid, liquid, and gas
: What star is closest to Earth?
The Sun
What is the layer of gases surrounding Earth called?
Atmosphere
What organ pumps blood through the human body?
The heart
Does a solid have a definite shape?
Yes
How many planets are in our Solar System?
8
What are the three main stages of the water cycle?
Evaporation, condensation, and precipitation
What process do plants use to make their own food?
Photosynthesis
What happens to water when it reaches its boiling point?
It changes from liquid to gas.
What is Earth's natural satellite?
The Moon
What causes day and night on Earth?
Earth's rotation
What is an organism?
A living thing.
What is the process called when a gas changes into a liquid?
Condensation
What causes the different phases of the Moon?
The changing positions of the Moon, Earth, and Sun as the Moon orbits Earth.
What is an ecosystem?
A community of living organisms interacting with their environment.
What is the difference between a habitat and an ecosystem?
A habitat is the place where an organism lives; an ecosystem includes living organisms and their interactions with the environment.
What is the difference between a physical and chemical change?
A physical change changes the form or appearance of matter; a chemical change creates a new substance.
What is the difference between rotation and revolution?
Rotation is an object's spinning on its axis; revolution is its movement around another object.