Earth and Space Science

What is a solar eclipse?

• When the Moon passes directly in front of the Sun as observed from Earth

• When the Earth passes directly in front of the Sun as observed from the Moon

• When the Sun passes directly in front of the Moon as observed from Earth

• When the Moon passes directly in front of the Earth as observed from the Sun

What causes the occasional intersection of the orbital planes of the Moon and the Earth?

• The differential between the orbital planes of the Moon and the Earth

• The Earth's rotational axis

• The precession of the Earth's orbit

• The combination of the effects of the precession of the Moon's orbit, the orbit itself, and the Earth's orbit

When does a lunar eclipse occur?

• When the Moon is situated in the Earth's shadow

• When the Earth is situated in the Moon's shadow

• When the Sun is situated in the Earth's shadow

• When the Earth is situated in the Sun's shadow

What phenomenon has led astronomers to postulate the existence of dark matter?

• The observation of gravitational force in the solar system

• The observation of electromagnetic radiation

• The observation of subatomic particles

• The observation of visible light

What are WIMPs?

• Subatomic particles that interact strongly

• Subatomic particles that interact weakly

• Subatomic particles that do not interact

• Subatomic particles that interact with visible light

Why can't astronomers directly study WIMPs?

• Because they are too large

• Because they do not emit electromagnetic radiation

• Because they move too fast

• Because they are too far away

Which technology is mentioned as insufficient to observe certain celestial bodies?

• Optical telescopes

• Radio telescopes

• X-ray technology

• Infrared technology

What is an asteroid?

• A small solid planet that orbits the Sun

• A large gaseous planet that orbits the Sun

• A small solid planet that orbits the Earth

• A large gaseous planet that orbits the Earth

Where are the orbital paths of most asteroids located?

• Between the orbits of Jupiter and Mars

• Between the orbits of Earth and Mars

• Between the orbits of Venus and Earth

• Between the orbits of Saturn and Jupiter

What are C-type asteroids primarily composed of?

• Carbon

• Nickel and iron

• Silicon

• Hydrogen