Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

The double planet, or condensation hypothesis, claimed that the moon:

  1. was fully formed and captured by the Earth's gravity as it wandered by

  2. formed with the Earth at about the same time

  3. formed when the young Earth spun so rapidly on its axis that a blob of molten Earth spun off

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The condensation hypothesis suggests the moon and Earth formed together from the same material in the solar nebula around 4.5 billion years ago. Option A describes the capture hypothesis, and C describes the fission hypothesis. The double planet theory refers to simultaneous formation.

Multiple choice general knowledge science & technology

The moon's period of lunar volcanism lasted from:

  1. about 3.7 to 2.5 billion years ago

  2. about 4.6 to 3.9 billion years ago

  3. about 2.4 to 1.6 billion years ago

  4. about 5.2 to 3.7 billion years ago
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lunar volcanism was most active during the period when maria (dark basaltic plains) formed, dated from about 3.7 to 2.5 billion years ago. Option B covers the earlier heavy bombardment era, C is too recent, and D incorrectly extends beyond the moon's geological activity.

Multiple choice general knowledge science & technology

The moon's gravity:

  1. allows it to orbit the Earth at a consistent rate

  2. has a significant impact on the frequency of natural disasters on Earth in a given year

  3. creates the tides in Earth's oceans as a result of its pull

  4. controls earths rotation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The moon's gravitational pull creates tidal bulges in Earth's oceans, causing high and low tides as Earth rotates. Option A is incorrect - orbital rate follows Kepler's laws, B overstates the moon's role in disasters, and D is false - Earth's rotation isn't controlled by the moon.

Multiple choice general knowledge science & technology

If the moon passes through the part of the Earth’s shadow called the umbra:

  1. A partial lunar eclipse will occur.

  2. A total lunar eclipse will occur.

  3. A total solar eclipse will occur.

  4. A partial solar eclipse will occure
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The umbra is the darkest, inner part of Earth's shadow where sunlight is completely blocked. When the moon passes through the umbra, a total lunar eclipse occurs. Partial lunar eclipses happen in the penumbra, and solar eclipses occur when the moon blocks the sun.

Multiple choice general knowledge science & technology

Name the symbol used to represent angle?

  1. Phi

  2. alpha

  3. theta

  4. omega
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

In mathematics and trigonometry, both Phi (Greek letter) and theta (Greek letter) are commonly used to represent angles. Phi is often used in specific angle contexts like the golden angle, while theta is the most general and widely used angle symbol in trigonometry and calculus.