G8 Ch2 DT 25-26

Name the following: 1. Substances in which the molecules are closely packed.

• Solids

• Liquids

• Gases

• Plasmas

SI unit for density.

• kg/m³

• g/cm³

• kg/L

• g/mL

Used in the kitchen to measure flour, sugar, oil, milk, etc.

• Measuring cup

• Knife

• Frying pan

• Chopping board

Upward force applied by the fluid on the object when an object is either totally or partially submerged in a fluid.

• Buoyant force

• Gravitational force

• Frictional force

• Magnetic force

Write T for True and F for False. 1. Aircrafts are made of aluminium as its density is very low.

• True

• False

Write T for True and F for False. 2. The density of aluminium is 7.8 g/cm³ and the density of iron is 2.7 g/cm³.

• True

• False

If an object is less dense than the fluid in which it is placed it will float on the fluid, if it is denser than the fluid it will sink.

• True

• False

Fill in the blank: Substances that have a high density are called _________.

• Dense substances

• Light substances

• Transparent substances

• Soluble substances

Fill in the blank: The SI unit of density is _________.

• kg/m³

• g/cm³

• kg/L

• g/L

Fill in the blank: Liquids are commonly measured using _________.

• Measuring cups

• Thermometers

• Rulers

• Scales