Science QSE 2 Review

Front

What is volume?

Back

Volume is the amount of space an object occupies, usually measured in milliliters (mL) or liters (L).

Front

How can you measure the volume of an irregular object?

Back

You can measure the volume of an irregular object by using the water displacement method. Fill a graduated cylinder with a known volume of water, then submerge the object and measure the new water level. The difference is the volume of the object.

Front

What happens to water when it evaporates?

Back

When water evaporates, it changes from a liquid to a gas, leaving behind any dissolved substances.

Front

What is density?

Back

Density is the mass of an object divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

Which materials are typically less dense than water?

Back

Materials like wood and plastic are usually less dense than water, allowing them to float.

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow, enabling devices like light bulbs to function.

Front

What is an open circuit?

Back

An open circuit is a broken electrical loop that prevents current from flowing, causing devices like light bulbs to not light up.

Front

What materials can conduct electricity?

Back

Materials that can conduct electricity include metals like aluminum, copper, and silver.

Front

What is the role of a light bulb in a circuit?

Back

A light bulb converts electrical energy into light energy when current flows through it.

Front

What is the effect of adding more batteries to a circuit?

Back

Adding more batteries increases the voltage, which can make the light bulb brighter.