MAP Science 2

Question 1

A student pushes a 2 kg cart and a 4 kg cart with the same force. Which statement best describes the result?

Accepted Answer

The 2 kg cart accelerates twice as much as the 4 kg cart

Answer

By Newton's second law (a = F/m), halving the mass doubles the acceleration for the same force.

Question 2

Which energy transformation occurs when a battery-powered flashlight is turned on?

Accepted Answer

Chemical energy to electrical energy to light energy

Answer

The battery stores chemical energy, which becomes electrical energy and then light (and some heat) in the bulb.

Question 3

A ball is thrown straight up. At its highest point, what is true about its energy?

Accepted Answer

Potential energy is at its maximum

Answer

At the top the ball momentarily stops, so kinetic energy is lowest and gravitational potential energy is highest.

Question 4

Sound travels fastest through which medium?

Accepted Answer

Steel

Answer

Sound moves fastest through solids like steel because particles are tightly packed and transmit vibrations quickly.

Question 5

Two magnets are placed with their north poles facing each other. What will happen?

Accepted Answer

They will repel

Answer

Like magnetic poles repel each other.

MAP - Missouri Assessment Program Practice Test