Ahs M. Epps Sayans Kwiz G9

What tube serves as the passage of air from the pharynx to the lungs and is also known as the windpipe?

• bronchi

• larynx

• esophagus

• trachea

Which of the following compounds has a of non-polar covalent bond?

• acids

• calcium oxide

• hydrogen chloride

• oxygen gas

Which characteristic of magma mainly determines its explosiveness?

• amount

• color

• silica content

• temperature

An object is launched at an angle to the horizontal on a long, flat firing range. Which angle produces the longest range? Assume that air resistance is negligible.

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees

Why is it important to separate deoxygenated blood from oxygenated blood?

• to provide more oxygen to cell.

• to provide carbon dioxide to cell.

• to make the flow of blood smoothly.

• to change the red color of blood to purple

Which of the following compounds can form ions when dissolved in water making it a good conductor of electricity?

• coffee

• powdered juice

• salt

• sugar

Which statement describes an inactive volcano?

• An active volcano that is not erupting but supposed to erupt again.

• Volcano that has had at least one eruption during the past 10,000 years.

• Volcanoes no longer produce eruptions but might again sometime in the future.

• A volcano that has not had an eruption for at least 10,000 years and is not expected to erupt again in a comparable time scale of the future.

What is TRUE about the vertical velocity of a projectile launched horizontally?

• It is initially at its maximum value.

• It increases due to gravity as it falls.

• It decreases as it falls due to gravity.

• It remains constant throughout its trajectory.

Why is pulmonary circulation important to the body?

• It helps to adjust body temperature.

• It exchanges oxygen and carbon dioxide

• It pumps the deoxygenated blood from the heart to the body

• It helps the heart transform oxygenated blood to deoxygenated blood.

Which is the main reason for the formation of snow in some places?

• precipitation

• very low temperature

• formation of clouds

• evaporation