Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

Total number of discovered and named moons of our solar system is

  1. 139

  2. 120

  3. 148

  4. 140
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As of 2014, planetary scientists had confirmed 139 moons orbiting planets in our solar system. This count includes 67 around Jupiter, 62 around Saturn, 34 around Uranus, 14 around Neptune, 5 around Pluto, and smaller numbers around other planets. The count continues to change as new moons are discovered through advanced telescope technology and space missions.

Multiple choice general knowledge science & technology

Which space probe has made the most productive unmanned space voyage so far

  1. Voyager 1

  2. Voyager 2

  3. Cassini-Huygens

  4. Spirit
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Voyager 2, launched in 1977, is considered the most productive unmanned space probe because it is the only spacecraft to have visited all four outer planets (Jupiter, Saturn, Uranus, and Neptune) and their moons. It discovered numerous moons, active volcanoes on Io, and provided unprecedented data about planetary atmospheres. Voyager 1 only visited Jupiter and Saturn before leaving the solar system, Cassini-Huygens orbited Saturn, and Spirit was a Mars rover.

Multiple choice general knowledge science & technology

Which moon has its length of day constantly changing

  1. Charon-Pluto

  2. Galatea-Neptune

  3. Hyperion-Saturn

  4. Thyone-Jupiter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Saturn's moon Hyperion has a chaotic rotation with no stable axis, causing its day length to constantly change. Hyperion is an irregularly shaped moon with a sponge-like appearance, and its tumbling rotation means its orientation and apparent day length vary unpredictably. None of the other options (Charon-Pluto, Galatea-Neptune, Thyone-Jupiter) exhibit this characteristic.

Multiple choice general knowledge science & technology

How many hearts does Octopus have?

  1. 0

  2. 1

  3. 2

  4. 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An octopus has three hearts - two branchial hearts that pump blood through the gills, and one systemic heart that pumps blood to the rest of the body. This unique circulatory system supports their active lifestyle and ability to camouflage. Options A, B, and C are incorrect.

Multiple choice general knowledge science & technology

Which creature can’t move their tongues and also can’t chew any thing?

  1. Lizard

  2. Python

  3. Crocodile

  4. Dinosaur
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Crocodiles cannot move their tongues because their tongue is attached to the bottom of their mouth by a membrane. They also cannot chew - they swallow their prey whole or tear off chunks. Options A (lizard) and B (python) can move their tongues. Dinosaurs are extinct.

Multiple choice general knowledge science & technology

Enamel is 2 times stronger than the tooth

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The statement is false - tooth enamel is actually much stronger than the tooth itself. Enamel is the hardest substance in the human body, consisting of 96% minerals. It protects the softer dentin and pulp inside the tooth. Saying it's only '2 times stronger' is an understatement - it's significantly harder.