Space Unit Review

What theory explains the origin of the universe?

• Nebular Theory

• Big Bang Theory

• Oscillating Universe Theory

• Multiverse Theory

Which of the following is NOT a type of galaxy?

• Elliptical

• Spiral

• Irregular

• Cylindrical

What keeps planets in orbit around the Sun?

• Centripetal force

• Electromagnetic force

• The Sun’s gravity acting on the planets

• The Moon’s pull on the oceans

Which of the following is TRUE about black holes?

• They give off visible light

• They have low density

• They can only form from the most massive stars

• They rotate at the speed of light

What causes the seasons on Earth?

• Variations in Earth's distance from the Sun

• Changes in the Sun's energy output

• Earth's tilted axis and revolution around the Sun

• The Moon's gravitational pull on Earth

Which of the following unit represents the largest distance?

• Astronomical Unit (AU)

• Light Year (ly)

• Kilometer (km)

• Centimeter (cm)

Which of the following is NOT a phase in the life cycle of an Average Star, such as the Sun?

• Neutron Star

• Red giant

• White dwarf

• Planetary Nebula

Which of the following best describes the shape of Earth's orbit around the Sun?

• Perfect circle

• Slightly elliptical

• A highly eccentric (very flattened) ellipse

• Parabola

What causes solar eclipses?

• The Moon passing between the Earth and Sun

• Earth's shadow falling on the Moon

• The Sun passing between the Earth and Moon

• Sunspots covering the Sun's surface

Which of the following correctly orders the inner planets of our solar system, starting from the one closest to the Sun?

• Venus, Mercury, Earth, Mars

• Mercury, Venus, Earth, Mars

• Mercury, Earth, Venus, Mars

• Mars, Earth, Venus, Mercury