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Glossary of Calvert Curriculum 3rd grade science Block 40

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What is a force that occurs when one object rubs against another?
friction
What is a main control center found in plant and animal cells?
nucleus
What is the pull of gravity on an object?
weight
What is the location of an object?
position
What is a push or pull?
force
What is a change of position?
motion
What is a thin outer covering of plant and animal cells?
cell membrane
What is a clear, jelly-like material that fills plant and animal cells?
cytoplasm
What is a subtance found in nature that is not a plant or an animal?
minerals
What is a group of parts that work together?
system
what is a tiny box-like part that is the basic building block of living things?
cell
What is a group of cells that are alike?
tissue
What is a group of tissues that work together?
organ
What is how fast an object moves?
speed
What is the pulling force between two objects?
gravity

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