Exploring States of Matter through Experiments

What is required to turn an electromagnet on or off?

• A light switch

• An electric current

• A permanent magnet

• A plastic coating

What is the core component around which the copper wire is wrapped to create an electromagnet?

• A wooden stick

• A large nail

• A plastic rod

• A rubber tube

What happens to an electromagnet when the electric current is stopped?

• It becomes a permanent magnet

• It loses its magnetic properties

• It attracts more metal

• It conducts electricity

What type of sugar is recommended for making rock candy in the experiment?

• Brown sugar

• Granulated white sugar

• Icing sugar

• Powdered sugar

What is the purpose of the shish kebab skewer in the rock candy experiment?

• To stir the sugar solution

• To measure the sugar

• To hold the candy

• To create seed crystals

What is the main reason for using an adult in the rock candy experiment?

• To stir the solution

• To buy ingredients

• To taste the candy

• To supervise the use of heat

How does mechanical advantage help in moving heavy objects?

• By using a small force over a longer distance

• By increasing the force applied

• By using electricity

• By reducing the weight of the object

What is the role of the rope in gaining mechanical advantage?

• To tie objects together

• To secure the object in place

• To measure distance

• To pull objects with less effort

What is the effect of lengthening the rope in a mechanical advantage setup?

• Shortens the pulling distance

• Decreases the force needed

• Increases the weight

• Makes the rope weaker

What scientific principle explains why a spinning top eventually slows down?

• Magnetism

• Electricity

• Gravity

• Friction