Earth & Space Sciences
Which planet is best known for its large and visible rings?
Saturn
Which type of cell is responsible for transporting oxygen around the body?
Red blood cell
A character or object that performs actions in a project in Scratch
Sprite
A 5 kg object experiences a net force of 20 N. What is its acceleration?
4 m/s2
What is the highest mountain in Mongolia?
Khüiten Peak (Cold Peak)
What type of rock forms when sediments are compacted and cemented together over time?
Sedimentary rock
Which hormone lowers blood glucose levels by promoting glucose uptake and storage?
Insulin
Technology that enables computers to perform tasks such as recognizing patterns, generating content, or making predictions
Artificial Intelligence
What metal will melt in your hand?
Gallium. It melts at about 30 °C (86 °F), which is below body temperature.
What wild horse native to Mongolia has 66 chromosomes, while domestic horses usually have 64?
Przewalski's horse (takhi)
In the water cycle, what is the process called when water vapor cools and changes into liquid droplets that form clouds?
Condensation
What is the functional unit of the kidney that filters blood and helps produce urine?
Nephron
In Python, what will be the output of
print(3 + 4 * 2)?
11
A ball is thrown vertically upward. At its maximum height, what is its instantaneous velocity, ignoring air resistance?
0 m/s
What fruit has more genes than humans?
A tomato! ~31,000 vs. ~20,000 in humans
What force keeps the planets in orbit around the Sun?
Gravity
What is the organelle in animal cells that acts as the main digestive and waste management system.
Lysosome
A computer has 3 switches. Each switch can be ON or OFF. How many different combinations are possible?
8 combinations
What is the only type of electromagnetic wave we can see with our eyes?
Visible light
What common fruit is naturally slightly radioactive?
The banana! It contains potassium-40, a radioactive isotope of potassium. (You’d need to eat millions at once for it to be dangerous.)
When the Sun, Earth, and Moon are approximately aligned, what type of tide is this?
Spring tide
During meiosis, what process exchanges genetic material between homologous chromosomes, increasing genetic variation?
Crossing over
In Python, a variable x = 10. Then the program runs x = x + 5 and x = x * 2. What is the final value of x?
30
What element is named after the Titans of Greek mythology due to the metal's immense strength?
Titanium
What planet has a day that’s longer than its year?
Venus! It takes about 243 Earth days to spin once, but only about 225 Earth days to orbit the Sun.