This force causes a ship's iron anchor to sink to the ocean floor when it is released overboard.
What is gravity?
100
A fundamental substance that cannot be broken into simpler substances by chemical or physical processes.
What is an element?
100
An individual living thing, such as a plant, animal, fungus, bacterium, or protist.
What is an organism?
100
A rock made from particles, such as sand, silt, and pebbles, or by precipitation of minerals from a solution, such as calcium carbonate.
What is a sedimentary rock?
100
The type of production that makes large quantities of identical products.
What is a mass production?
200
One variable in Newton's second law that is change of speed per unit of time.
What is acceleration?
200
A solution with a large amount of solute dissolved in a small amount of solvent.
What is "concentrated?"
200
The process by which plants, and some protists and bacteria use light energy, carbon dioxide, and water to make sugar.
What is photosynthesis?
200
The breaking apart of rocks by physical or chemical methods.
What is weathering?
200
The step in the manufacturing process where the assembled product is sanded, painted or stained.
What is a finishing?
300
The temperature at which a substance changes from a gas to a liquid, or a liquid to a gas.
What is boiling point?
300
Not capable of being dissolved in a certain substance.
What is "insoluble?"
300
A primitive kind of cell containing no nucleus or organelles (e.g. bacteria).
What is prokaryotic?
300
A geological principle that states that layers of sedimentary rocks are formed on top of older layers.
What is superposition?
300
The part of a communication system that takes the code from the encoder and sends it out.
What is the transmitter?
400
A property that is constant for any size sample, and is the amount of matter per unit volume.
What is density?
400
A process during which starting substances (reactants) change into new substances (products) with different arrangements of atoms.
What is a chemical reaction?
400
A young plant in a dormant or resting stage, capable of growing into an adult plant.
What is a seed?
400
The transformation of rocks from one type to another by melting, weathering, erosion, deposition, heat, pressure, or deformation.
What is the rock cycle?
400
what CAD stands for in "Tinkercad"
What is computer-aided design?
500
This type of energy depends on both the temperature and the mass of an object (e.g. an iceberg has more than a cup of boiling water).
What is thermal energy?
500
This type of change occurs when baking soda is heated and the product carbon dioxide appears.
What is chemical change?
500
A semi-rigid structure that surrounds cells of plants, fungi, and bacteria. Does not exist in animal cells.
What is a cell wall?
500
The type of tide that occurs twice each month, when the difference between high and low tides is the smallest, and the earth, moon, and sun are at right angles to each other.