Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

True or False. You can tell the temperature of a star by looking at it's color.

  1. True

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

A star's color directly indicates its surface temperature through blackbody radiation. Hotter stars appear blue/white (surface temperatures above 10,000K), moderately hot stars appear yellow (like our Sun at ~5,800K), and cooler stars appear red (below 3,500K). This relationship is described by Wien's displacement law.

Multiple choice general knowledge science & technology

What is the name of the closes star to the Earth, other then the Sun?

  1. Arcturus

  2. Polaris

  3. Moon

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

Proxima Centauri is the closest star to Earth (excluding the Sun), located about 4.24 light-years away in the Alpha Centauri star system. Arcturus is about 37 light-years away. Polaris (North Star) is about 433 light-years away. The Moon is Earth's satellite, not a star.

Multiple choice general knowledge science & technology

The first Earthling in space was:

  1. Yuri Gagarin

  2. Valentina Tereshkova

  3. Laika

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

Laika, a Soviet dog, became the first Earthling (living creature) to reach space aboard Sputnik 2 on November 3, 1957. Yuri Gagarin was the first human in space (1961). Valentina Tereshkova was the first woman in space (1963). Neil Armstrong was the first human on the Moon (1969).

Multiple choice general knowledge science & technology

The first American in space was:

  1. Neil Armstrong

  2. Yuri Gagarin

  3. Alan Sheppard

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

Alan Shepard became the first American in space on May 5, 1961, during the Freedom 7 mission. Yuri Gagarin was Soviet (first human in space). John Glenn was the first American to orbit Earth. Neil Armstrong was the first human to walk on the Moon.

Multiple choice general knowledge science & technology

The first woman in space was:

  1. Sally Ride

  2. Valentina Tereshkova

  3. Mae Jemison

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

Valentina Tereshkova, a Soviet cosmonaut, became the first woman in space on June 16, 1963, aboard Vostok 6. Sally Ride was the first American woman in space (1983). Mae Jemison was the first African-American woman in space (1992). Gus Grissom was a male American astronaut.

Multiple choice general knowledge science & technology

The first American woman to pilot a spacecraft:

  1. Eileen Collins

  2. Sally Ride

  3. Valentina Tereshkova

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

Eileen Collins became the first American woman to pilot a spacecraft when she commanded STS-63 (Discovery) in 1995. Sally Ride was the first American woman in space (1983) but not the first to pilot. Valentina Tereshkova was the first woman in space overall (Soviet, 1963). Mae Jemison was the first African American woman in space (1992).

Multiple choice general knowledge science & technology

The second human to step on the moon:

  1. Neil Armstrong

  2. Michael Collins

  3. Buzz Aldrin

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

Neil Armstrong was the first human to step on the moon (1969). Buzz Aldrin was the second, stepping onto the lunar surface about 19 minutes after Armstrong. Michael Collins was the Command Module Pilot who stayed in lunar orbit and never walked on the moon. Mae Jemison is unrelated to lunar missions.