Subscribe to our youtube channel for more tests.

Science Quiz: Hard!
Question 1 of 10
In 2006, the International Astronomical Union demoted which of the nine planets, making it simply a minor planet in the Kuiper Belt?
Question 2 of 10
The Andean and California are the only species of the largest flying land birds in the Western Hemisphere. What are they?
Question 3 of 10
Today, Australia is overrun with them, but their slime does make you a bit high. What is it?
Question 4 of 10
Billie Holiday was killed by what liver disease, a byproduct of alcoholism, in which healthy liver cells are replaced with connective tissue?
Question 5 of 10
Which medical condition is characterized by "grand mal" and "petit mal"?
Question 6 of 10
The grandfather paradox is held up as one of the risks of what improbable science fiction activity?
Question 7 of 10
Which of these would be an example of jet propulsion?
Question 8 of 10
Based on grain size on the Wentworth-Udden scale, which of these would be smallest?
Question 9 of 10
With which 1948 invention is Leo (Clarence) Fender associated?
Question 10 of 10
Which of these shapes has the fewest sides?
Play Next Quiz

More interesting quizzes