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Biology
Chemistry
Earth Sciences
Physics
100

What is the largest mammal on earth?

The blue whale

100

The powerhouse of the cell.

What are mitochondria?

100

This alkali metal is very soft, highly reactive, and has an atomic number of 11.

What is sodium? (will also accept Na)

100

The three types of rocks: igneous, metamorphic, and ________.

What is sedimentary?

100

The Ohm measures this.

What is resistance?

200

 True or false: Birds and insects are the only animals that can fly

False, bats can also fly

200

This system includes skin, hair, and nails.

What is the integumentary system?

200

There are 6.02 x 1023 particles of any substance in one of these units.

What are moles?

200

The inner core of the earth is this state of matter.

What is solid?

200

This unit of measurement is used to express the frequency range of sound.

What is Hertz?

300

What’s the largest organ of the human body?

The skin

300

This forms when the body breaks down carbohydrates to use for energy when oxygen levels are low, usually during intense exercise

What is lactic acid?

300

Dimensional analysis is also called this, derived from the Greek roots meaning "element" and "measure."

What is stoichiometry? 

300

The softest mineral, which is often found in cosmetics.

What is talc?

300

An object in free fall is only affected by this force.

What is gravity?

400

What is the only metal that is a liquid at room temperature?

Mercury (melting point of negative 39.9 degrees Celsius)

400

This constriction of muscles in the esophagus allows us to eat upside-down.

What is peristalsis?

400

Combustion reactions always produce CO2 and ______.

What is H2O? (will also accept water.)

400

This region of underwater volcanoes around the Pacific Ocean shares a name with a popular Johnny Cash song.

What is the Ring of Fire?

400

This Renaissance scientist is credited with the invention of the pendulum.

Who is Galileo Galilei? 

500

What color do you get if you mix all colors of light?

White. White objects appear white to our eyes because they reflect back all the visible wavelengths of light that shine on them

500

The full name of ATP, the body's energy currency.

What is adenosine triphosphate?

500

In the integrated rate law for first-order reactions:

ln[A]- ln[A]0 = -kt

Graphically, what does k represent when plotting ln[A] vs time?

What is the negative slope?

500

The most common gas found in the atmosphere.

What is nitrogen?

500

20,000 Hz is the highest frequency for _______.

What is human hearing?