8th Science STAAR Review

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. It is highest when the object is at its highest point, such as at the top of a hill.

Front

What does the law of conservation of mass state?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of reactants equals the total mass of products.

Front

What are biotic factors?

Back

Biotic factors are the living components of an ecosystem, such as plants, animals, and microorganisms.

Front

What are abiotic factors?

Back

Abiotic factors are the non-living components of an ecosystem, such as sunlight, water, temperature, and soil.

Front

What is a food web?

Back

A food web is a complex network of feeding relationships among organisms in an ecosystem, showing how energy and nutrients flow.

Front

What is the role of a hawk in a food web?

Back

A hawk is a top predator in a food web, meaning it has few natural enemies and can have many food sources.

Front

What is force?

Back

Force is a push or pull acting on an object, measured in newtons (N). It can cause an object to accelerate, decelerate, or change direction.

Front

What is net force?

Back

Net force is the overall force acting on an object when all individual forces are combined. It determines the object's motion.

Front

What happens when forces are unbalanced?

Back

When forces are unbalanced, the object will accelerate in the direction of the net force.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, dependent on its mass and speed.