Roughly how long does it take for the sun’s light to reach Earth?

What are the four states of matter?

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

What does a Geiger counter measure?

What’s the largest desert on Earth?

Who was the first human to travel into space?

Bronze is an alloy made of which two elements?

What is the tallest type of grass?

How many bones do sharks have?

What is the largest mammal in the world?

What is the largest ocean on Earth?

How many continents are there on Earth?

Which scientist is famous for the equation E=MC2?

How many legs does a spider have?

Which fruit is associated with Isaac Newton and gravity?

What is the hardest natural substance on Earth?

What gas do plants absorb from the air?

What is the process of a liquid turning into a gas called?

What is the study of living things called?

What is the center of an atom called?

What is the largest land animal?

What do you call a baby frog?

What do bees collect from flowers?

What is the name of the process where a substance goes directly from a solid to a gas without becoming a liquid?

Which enzyme is responsible for unwinding the DNA double helix during replication?

What is the name for the amount of energy it takes to increase the temperature of one gram of water by one degree Celsius?

What’s the name of the protein in blood that carries oxygen?

In genetics, what does the acronym SNP stand for?

What is the chemical name for rust?

What is the most electronegative element on the periodic table?

What’s the name of the theory that explains how the continents move across the Earth’s surface?

What’s the name of the process in which plants lose water through tiny pores in their leaves?

A, C, and T, are three of the letters used to represent parts of DNA. What’s the fourth one?

What’s the name of the phenomenon where light changes direction when it passes from one medium to another?

What is the term for the energy stored in chemical bonds?

What is the name of the nucleic acid that acts as a messenger in protein synthesis?

What’s the name of the process by which rocks are broken down by chemical reactions?

What’s the term for the energy required to remove an electron from an atom in its gaseous state?

What is the name of the type of chemical bond formed by the sharing of electrons between atoms?

What is the name of the process by which some organisms convert atmospheric nitrogen into biologically usable forms?

What is the term for the measure of disorder or randomness in a system?

Which type of cloud is associated with thunderstorms?

What is the boundary between two tectonic plates called?

Which animal has the longest gestation period?

What’s the largest species of bear?

What is a group of parrots called?

How many legs do lobsters have?

What color is a polar bear’s skin?

What’s the only big cat that doesn’t roar?

Which mammal has the thickest fur?

What’s the fastest bird?

What animal lays the largest egg?

Which type of tree doesn’t lose its leaves in winter?

What is the process by which rocks are broken down by wind, water, or ice?

What’s the name of the deepest place in the ocean?

What is the term for a group of organisms that can interbreed and produce fertile offspring?

What is the term for an organism that lives in close association with another organism of a different species?

Mycology is the scientific study of what?

How many bones are in a giraffe’s neck?

What’s the smallest mammal in the world?

What mammal has the most powerful bite?

What’s the deadliest animal to humans?

What animal’s tongue can be as long as its body?

What is the rarest blood type?

What is the medical term for bad breath?

How many bones are there in the adult human body?

Which organ is responsible for producing insulin?

How many pairs of ribs does the human body typically have?

Which part of the human body contains the smallest bones?

What’s the name of the process by which cells divide to create identical cells?

What’s the largest artery in the human body?

What is the term for the process by which the body converts food into energy?

What substance are hair and nails made of?

What is the name of the iron-containing protein in red blood cells that carries oxygen?

How many taste buds does the average human tongue have?

How many vertebrae are there in the human spine?

What part of the brain is responsible for memory and learning?

What is the largest muscle in the human body?

How many teeth does an adult have?

What type of cell is responsible for carrying electrical impulses in the nervous system?

What’s the sun primarily made of?

What makes the moon shine?

Which planet rotates on its side, with its axis tilted at over 90 degrees?

What’s the nearest star system to our solar system?

What are planets outside our solar system called?

What is the name of the largest asteroid in the asteroid belt between Mars and Jupiter?

Which space probe was the first to leave the solar system?

What is the term for two stars that orbit around a common center of mass?

What is the name of the first spacecraft to visit Pluto?

Who was the second man to walk on the moon?

What are the names of the two moons of Mars?

Which planet in our solar system has the highest surface temperature?

Which planet has the shortest day, of about 10 hours?

Which planet has the longest year, of about 165 Earth years?

What is the name of the first woman to travel into space?

What’s the largest moon in the solar system?

How many space shuttles have there been, and what are their names?

Which planet is also known as the "Evening Star"?

What is the most abundant gas in the Earth's atmosphere?