8th Grade Science FAST Review

Front

What is the Moon's movement relative to Earth and the Sun?

Back

The Moon revolves around Earth as Earth revolves around the Sun.

Front

What significant discovery changed scientific knowledge about genetics?

Back

The discovery of the function of the DNA molecule.

Front

What is radiation in the context of heat transfer?

Back

Radiation is the transfer of heat through electromagnetic waves, such as energy from the Sun heating the ocean's surface.

Front

How does temperature affect the solubility of substances in water?

Back

Solubility can change with temperature; for example, KCl is more soluble at certain temperatures compared to NaCl.

Front

What does the law of conservation of mass state?

Back

The mass of a closed system will remain constant over time, meaning it will neither increase nor decrease.

Front

What is the process of convection in fluids?

Back

Convection is the transfer of heat by the movement of fluids, where warm fluid rises and cool fluid sinks.

Front

What is the difference between a hypothesis and a theory?

Back

A hypothesis is a testable prediction, while a theory is a well-substantiated explanation based on a body of evidence.

Front

What is the role of the Sun in the water cycle?

Back

The Sun provides energy for evaporation, which is a key process in the water cycle.

Front

What is the significance of phase changes in matter?

Back

Phase changes, such as melting and boiling, involve energy transfer and changes in the arrangement of particles.

Front

What is the definition of solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent, typically measured in grams per 100 mL of solvent.