Ecosystem & Food Webs
What is the role of a producer in an ecosystem?
Makes its own food (usually through photosynthesis)
What layer of Earth do we live on?
Crust
What are the three main states of matter?
Solid, liquid, gas
What is the basic unit of life?
Cell
What galaxy do we live in?
Milky Way
What type of organism eats both plants and animals?
Omnivore
What is molten rock called when it is underground?
Magma
What is the smallest unit of matter?
Atom
What cell organelle controls the cell?
Nucleus
What is the closest star to Earth?
The Sun
What is the original source of energy for most ecosystems?
The Sun
What causes earthquakes?
Movement of tectonic plates
What type of energy is energy of motion?
Kinetic energy
What process do plants use to make food?
Photosynthesis
What causes day and night?
Earth's Rotation
What do decomposers break down?
Dead organisms and waste
What is the process by which rock is broken down into smaller pieces?
Weathering
What happens to molecules when temperature increases?
They move faster
What structure controls what enters and leaves the cell?
Cell membrane
What force keeps planets in orbit around the Sun?
Gravity
What is the difference between a food chain and a food web?
A food chain is one path of energy flow; a food web shows many interconnected paths
What is the theory that explains how continents move over time?
Plate tectonics (or Continental Drift Theory)
What is the law that states matter cannot be created or destroyed?
Law of Conservation of Matter
What is the difference between plant and animal cells?
Plant cells have chloroplasts and a cell wall; animal cells do not
What is the name of the planets in our solar system in order?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune