Unit Test Astronomy 2025}

What is "revolution" in space science?

• When aliens demand change and overthrow their leaders

• The wobbling motion of Earth's axis

•  A political uprising among the planets

•  A planet's movement around a star in an orbit

Most models of the solar system are

• Accurate scales of our solar system

• show everything exactly how it is to scale

• extremely innacurate scale models

• good looking and need a modeling contract

What is the thing that makes the planets orbit

• Jupiter
• Neptune
• Sun
• God

All planetary orbits are:

• Elliptical and clockwise

• Elliptical and conterclockwise

• Circles and fixed paths

• Evenly spaced and circular

Singularity refers to a point where density and gravity are infinite

• True

• False

What is a meteor?

• A chunk of an asteroid that orbits the Sun indefinitely

• A small space rock that burns up in Earth's atmosphere

• A comet fragment that crashes into the Moon

• A stationary rock orbiting the sun

What is the main difference between astronomy and astrology?

• Astrology studies stars, while astronomy studies planets

• Astronomy is only about telescopes, while astrology is about space travel

• Astrology uses math, while astronomy does not

• Astronomy is a science, while astrology is based on belief systems

What does the Hertzsprung-Russell diagram compare?

• The brightness and temperature of stars

• The size and age of planets

• The distance of galaxies from Earth

• The number of moons around a planet

What does "crescent" mean in relation to the Moon?

• The Moon’s attempt to smile at Earth

• A shadow caused by Earth's atmosphere

• The description for when the moon appears "fat"

• A phase where less than half of the Moon is visible as a curved sliver

What are "naked eye observations"?

•  Watching the stars while shirtless for maximum space connection

• Observing celestial objects without the use of telescopes or binoculars

•  Studying planets using sunglasses to reduce glare

•  When astronomers refuse to wear safety goggles in labs