Chemistry
Biology
Physics
Anatomy
Earth Day
100

This type of bond forms when electrons are transferred from one atom to another.


What is an ionic bond?

100

This process allows plants to convert sunlight into chemical energy.

What is photosynthesis?

100

This force opposes motion between two surfaces in contact.

 What is friction? 



100

This system of the body includes the brain and spinal cord and controls body activities.

What is the nervous system?

100

 This gas, produced by burning fossil fuels, is the main contributor to the greenhouse effect.

What is Carbon dioxide?

200

This subatomic particle determines the identity of an element.

 What is the proton?

200

This molecule carries genetic information in living organisms.

 What is DNA?

200

 This quantity is the product of mass and velocity.

 What is momentum?

200

This organ is responsible for filtering blood, producing bile, and detoxifying harmful substances

What is the liver?

200

 This type of energy comes from natural sources that won’t run out, like sunlight and wind.

What is renewable energy?

300

 This law states that matter cannot be created or destroyed in a chemical reaction.

What is the Law of Conservation of Mass?

300

What organelle is known as the “powerhouse of the cell.”

 What is the mitochondrion?

300

This is the perpendicular contact force that a surface exerts on an object.

What is the normal force?

300

This type of muscle is found in the heart and is responsible for involuntary contractions.


What is cardiac muscle?

300

These hydrocarbon-based energy sources are non-renewable forms of energy.

What are fossil fuels?

400

This lab process uses a burette, flask, and a chemical indicator called “phenolphthalein”.

What is titration?

400

This type of cellular transport requires energy (ATP) to move molecules against a concentration gradient

What is active transport?

400

This is what causes an object to spin/turn.

What is torque?

400

This type of blood vessel carries blood away from the heart, typically high in oxygen

What is an artery?

400

This region of Earth produces roughly 20% of the planet’s oxygen, often called the “lungs of the planet”

What is the Amazon Rainforest?

500

 This is the state of a system in which the rate of the forward reaction is equal to the rate of the reverse reaction.

What is chemical equilibrium?

500

This is the specific enzyme responsible for “unzipping” the DNA double helix during replication

What is Helicase?

500

This is the greek letter that symbolizes the coefficient of friction.

What is mu (μ)?

500

This is the microscopic gap between two neurons where neurotransmitters are released to transmit a signal

What is a synapse?

500

When was the first Earth Day celebrated and why?

April 22, 1970, to raise awareness about environmental degradation