STAAR Release Science Test 2018

Front

What is the formula to calculate force?

Back

Force (F) = mass (m) × acceleration (a)

Front

Define acceleration.

Back

Acceleration is the rate of change of velocity of an object with respect to time.

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is a producer in an ecosystem?

Back

A producer is an organism that can make its own food, typically through photosynthesis, such as plants.

Front

Define predator-prey relationship.

Back

A predator-prey relationship is a biological interaction where one organism (the predator) hunts and eats another organism (the prey).

Front

What is biodiversity?

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem.

Front

Explain the concept of energy transformation.

Back

Energy transformation is the process of changing energy from one form to another, such as chemical energy to thermal energy.

Front

What is a food web?

Back

A food web is a complex network of feeding relationships among organisms in an ecosystem.

Front

Define thermal energy.

Back

Thermal energy is the total kinetic energy of particles in a substance, related to its temperature.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic material, returning nutrients to the soil.