Food Chains & Webs
What is it called when something makes its own food?
Producer
What is the variable you change in an experiment?
Independent Variable
What is an ecosystem?
Living and nonliving things interacting
What is matter?
Anything that has mass and takes up space
What is energy?
The ability to do work
What is a decomposer?
Organisms that break up dead matter
What is the variable in an experiment that you measure?
Dependent Variable
What is a nonliving factor in an ecosystem?
Sunlight
Which state of matter has a definite shape?
Solid
What is a source of energy for Earth?
The sun
What is the role of a consumer?
Eat other organisms and pass energy
Why do scientists use controlled variables?
To keep the tests fair/accurate
What ecosystem would you MOST likely find a cactus?
Desert
Which type of change happens when ice melts?
Physical Change
What force pulls objects toward Earth?
Gravity
In a food chain, what happens to energy as it moves up levels?
It decreases
Which is the BEST example of a testable question?
Do plants like water?
Plants are cool
Do plants grow better with sunlight?
Do plants like certain pots better?
Do plants grow better with sunlight?
What happens in an ecosystem when a new predator is introduced?
Prey population decreases
Which is an example of a chemical change?
A. Cutting paper
B. Melting ice
C. Burning wood
D. Breaking glass
C-Burning Wood
Which surface creates the MOST friction?
A. Ice
B. Tile
C. Sandpaper
D. Water
C- Sandpaper
If all the rabbits in a food web disappeared, what would MOST LIKELY happen?
Predators would decrease
In an experiment testing plant growth with different fertilizers, what should stay the same?
The amount of sunlight
Which BEST explains biodiversity?
A. Number of rocks
B. Variety of living organisms
C. Amount of sunlight
D. Size of ecosystem
B-Variety of living organisms
What happens to particles in a gas?
The spread and move freely
What type of energy is stored energy?
Potential Energy