Ecosystems
What is the primary source of energy for almost all food chains?
the sun
What is the force that holds us to the Earth?
gravity
The three common states of matter.
solid, liquid and gas
How many planets are there?
8
The name of the process plants use to make their own food using sunlight.
photosynthesis
What makes up earth and is made up of nonliving and living things?
ecosystems
How long does it take for Earth to complete one revolution around the Sun?
365 days
True or False: It is impossible to destroy matter.
true
How many phases of the moon are there?
8 phases
a testable, educated guess or tentative explanation for a specific phenomenon, based on existing knowledge, observation, or logic
hypothesis
This type of biome features cold weather and evergreen trees.
tundra
What is the primary reason Earth has different seasons?
earths tilt
True or False? Plasma is a state of matter.
true
Which planet is closest to the Sun?
mercury
An animal that is eaten by a predator.
prey
What does abiotic and biotic mean?
nonliving and living
The Earth's ___________ gives us day and night.
rotation
This state of matter has a definite volume but takes the shape of its container
liquid
Which planet is known as the "Red Planet" and has the highest mountain in our solar system?
MArs
What do plants produce during photosynthesis?
oxygen
This is what could happen to an ecosystem if the food source or habitat is destroyed.
the population would decrease or die
True or False: Earth is the only planet with liquid water.
True. While ice exists elsewhere, Earth is the only known planet with stable bodies of liquid water on its surface.
Anything that has mass and takes up space.
matter
Why do stars look like tiny points of light, even though they are much larger than Earth?
they are very far from earth
herbivore