The Moon
Electromagnetic Radiation
The Sun Some More
More Planets
Misc

100

The youngest features on the lunar surface are _________.
rayed craters

100

Which of the following colors has the longest wavelength?
red

100

The most conspicuous features on the surface of the Sun are dark areas called ________.
sunspots

100

What is the second planet from the Sun?
Venus

100

The length of daylight on the Moon is about _______.
two weeks

200

Depressions on the moon’s surface caused by the impact of meterorites and other debris are known as ________.
craters

200

In different situations, light behaves like ________.
waves or particles

200

Much of the Sun’s energy is produced by:
The fusion of hydrogen atoms to produce helium

200

Which one of the terrestrial planets has a surface landscape similar to that of the older areas of the Moon?
Mercury

200

________ are small, extraterrestrial particles that glow brightly and burn up as they travel through the Earth’s atmosphere.
Meteroids

300

How did the lunar maria most likely originate?
huge impact basins that were nearly filled with basaltic lava flows

300

Which of the following is NOT considered a form of electromagnetic radiation? a. radio waves b. gravity c. gamma rays d. visible light e. x-rays
gravity

300

The most explosive events to occur on the Sun are ________.
solar flares

300

According to the Ptolemaic (Greek) model of the universe, how many “heavenly” bodies could be observed wandering along the background of stars?
seven

300

In what solar system model was the sun proposed as the center of the solar system?
Heliocentric model

400

________ is a moon of Mars.
Phobos

400

Which of the following types of telescopes must be above Earth’s atmosphere to function?
an X-ray telescope

400

The Sun’s surface has a grainy texture produced by numerous bright markings called ______.
granules

400

All the planets (excluding Pluto) orbit the Sun in the same direction and in nearly the same plane of orbit.
False

400

To determine whether a celestial body is approaching or receding from Earth, astronomers employ __________.
The Doppler principle

500

The period of time required for the Moon to complete a revolution is called the ______ month.
sidereal

500

In the electromagnetic spectrum, what type of radiation has the longest wavelengths?
Radio waves

500

Major solar flares cause ________.
spectacular aurora displays on Earth

500

Hubble’s law states that galaxies are receding from us at a speed that is proportional to their ________.
distance

500

The discovery that the universe appears to be expanding led to a widely accepted theory called _________.
the Big Bang