Forces Density Electricity Review

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

How do you calculate the mass of an object if you know its kinetic energy and velocity?

Back

Rearranging the kinetic energy formula KE = 1/2 mv² gives mass m = 2KE/v².

Front

What is an electric circuit?

Back

An electric circuit is a closed path through which electric current flows, consisting of a voltage source (like a battery), conductors (like wires), a load (like a light bulb), and a switch.

Front

What is the least dense liquid among oil, water, syrup, and a plastic bottle?

Back

Oil is the least dense liquid among the options provided.

Front

What factors affect gravitational potential energy?

Back

Gravitational potential energy depends on the height and mass of the object.

Front

What is volume?

Back

Volume is the amount of space an object occupies.

Front

What is density?

Back

Density is the mass of an object divided by its volume, often expressed in units like kg/m³.

Front

How does temperature affect the density of liquids?

Back

Generally, as temperature increases, the density of liquids decreases because the liquid expands.

Front

What is the formula for calculating density?

Back

Density (ρ) = Mass (m) / Volume (V).

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, so current is the same through all components. In a parallel circuit, components are connected across common points, allowing multiple paths for current.