8th Grade STAAR Review

Front

What is constant speed?

Back

Constant speed refers to the motion of an object moving at a fixed distance over time without changing its velocity.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, typically measured in meters per second squared (m/s²).

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) = Force (F) / Mass (m) where Force is in newtons and Mass is in kilograms.

Front

What is potential energy?

Back

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

Front

What is the Coriolis Effect?

Back

The Coriolis Effect is the apparent deflection of moving objects when viewed in a rotating reference frame, affecting wind and ocean currents.

Front

What determines the direction of wind rotation in hurricanes?

Back

The Coriolis Effect determines the direction of wind rotation in hurricanes and cyclones.

Front

What is density?

Back

Density is the mass of an object divided by its volume, typically expressed in kilograms per cubic meter (kg/m³).

Front

How does density change with temperature?

Back

Generally, as temperature increases, the density of a substance decreases, and vice versa.

Front

What is mechanical force?

Back

Mechanical force is a push or pull on an object resulting from its interaction with another object.

Front

What is unbalanced force?

Back

An unbalanced force is a net force acting on an object that causes it to accelerate in the direction of the net force.