HRCA Science III-IV 2021 PART 4

Which of these contains the MOST tightly packed matter particles?

• a milkshake

• tea

• carbon dioxide

• the desk where you are sitting

Loudness is measured in

• waves

• spectrum

• frequency

• Decibels

Moisture in the air is called

• humidity

• temperature

An area of new land at the mouth of a river, formed by sediments carried by the river is called

• delta

• fault

• epicenter

• topography

An object that separates light into the colors that make it up is called a

• Optical fibers

• Lens

• prism

What is the bouncing back of light waves?

• reflection

• refraction

• frequency

A species that has more dying in a year than being born is considered

• extinct

• threatened

• endangered

• thriving

Worker ants are

• male only

• female only

• male and female

Buying foods in bulk or large packages rather than buying small individually wrapped package foods is

• Recycling

• Reusing

• Dieting

• Reducing

Arthropods are apart of which group?

• Vertebrates

• Invertebrates

• Sponges

• pods