Quarter 2 Most Missed Questions

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It can be turned on and off.

Front

What do you need to create an electromagnet?

Back

You need a dry cell with current, insulated wires, and a core material like iron.

Front

What is ultrasound used for?

Back

Ultrasound is used in medical diagnostics to create images of internal body structures using high-frequency sound waves.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion. It increases as the object's speed increases.

Front

What is a dependent variable in an experiment?

Back

The dependent variable is the factor that is measured or observed in an experiment, which changes in response to the independent variable.

Front

Why would you use an electromagnet instead of a regular magnet?

Back

You would use an electromagnet if you need to control when the magnet is on or off.

Front

What happens to an object's motion if a greater force is applied?

Back

The object will move faster, and its kinetic energy will increase.

Front

What is the purpose of using insulated wires in an electromagnet?

Back

Insulated wires prevent the electric current from escaping and ensure that the current flows through the wire to create a magnetic field.

Front

What is pitch in sound?

Back

Pitch is how high or low a sound is, determined by the frequency of the sound waves.

Front

What is the relationship between force and motion?

Back

An increase in force applied to an object typically results in an increase in its motion and kinetic energy.