8th Grade Science Vocabulary Final Exam

Front

What are reactants in a chemical equation?

Back

Reactants are the chemicals written before the arrow in a chemical equation that indicate the substances that react during a chemical reaction.

Front

What landform is caused by a divergent boundary where the land between two plates sinks?

Back

A rift valley is formed when the land between two tectonic plates sinks due to a divergent boundary.

Front

What is a chemical equation?

Back

A chemical equation is a combination of chemical formulas that indicates the reactants and products of a chemical reaction.

Front

What are balanced forces?

Back

Balanced forces are when forces acting on an object are equal or cancel out, resulting in no motion or no change in motion.

Front

What is the Theory of Plate Tectonics?

Back

The Theory of Plate Tectonics states that Earth's crust is broken into pieces called 'plates' that float atop the molten mantle.

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction, written after the arrow in a chemical equation.

Front

What is a divergent boundary?

Back

A divergent boundary is a tectonic plate boundary where two plates move away from each other, often creating rift valleys or mid-ocean ridges.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the composition of a substance using symbols for its constituent elements.

Front

What are unbalanced forces?

Back

Unbalanced forces occur when the forces acting on an object are not equal, causing a change in motion.

Front

What is a mid-ocean ridge?

Back

A mid-ocean ridge is an underwater mountain range formed by plate tectonics at a divergent boundary.