| A | B |
|---|
| Hesperus | ancient name for the evening star |
| Phosphorus | ancient name for the morning star |
| Lucifer | another name for the morning star |
| brightest object in the sky | Venus |
| time when Venus is visible | three hours before sunrise |
| another time when Venus is visible | three hours after sunset |
| first space to flyby Venus | Mariner 2 |
| orbiter which continues to to measure upper atmosphere | Pioneer Venus 1 |
| 97 % of the atmosphere is made up of this. | carbon dioxide |
| 3 % of the atmosphere is made up of this. | nitrogen gas |
| Cloud particles consist mostly of | concentrated sulfuric acid |
| temperature on Venus | 462 |
| Venus can be seen from a | telescope |
| Venu and Mercury are classified as an . . . . planet. | inferior |
| inferior planets | planets that revolve around the sun in orbits smaller in diameter than that of earth |
| Venus, Mercury, earth, and Mars are classified as . . . . planets. | terrestrial |
| Planets that are close to the sun and are composed mostly of rock and metal are . . . . . | terrestrial planets |
| Terrestrial planets are also called . . . . . | inner planets |
| Venus was named after the Roman goddess of . . . | love |
| How many known moons does Venus have? | none |
| How long is a day on Venus? | 58.4 earth days |
| How long is a year on Venu | 224.7 earth days |
| The direction of Venus's rotation is . . . . (opposite to that of earth). | retrograde |
| The surface of Venus is primarily a rolling . . . . | plain |
| In addition to the rolling plain on Venus, there are two . . . . -sized highland areas. | continent |
| The continent-sized highland areas on Venus are called Ishtar Terra and . . . . . | Aphrodite Terra |
| Aphrodite Terra is named after the . . . . . name for Venus. | Greek |
| When viewed from the North Pole, Venus rotates . . . . . . | clockwise |
| The large amount of . . . . . . in the atmosphere accounts for the extremely high temperatures near the planet's surface. | carbon dioxide |
| Venus and Mercury's movements are unique. They appear to move from one side of the . . . . to the other. | sun |
| Surface markings on Venus aren't visible because of | the thick cloud cover |
| There are no . . . . or other bodies of water on Venus. | oceans |
| There are no oceans or bodies of water on Venus because the high temperatures would cause water to . . . . . . into the atmosphere. | evaporate |
| Scientists aren't sure if Venus ever did have any . . . . . | water |
| The clouds surrounding Venus are made up of sulfuric acid, the same chemical found in | automobile batteries |
| The temperature on Venus is extremely high because of the Runaway . . . . . . Effect. | Greenhouse |
| The . . . . . . . occurs when heat from the sun is trapped near the surface of Venus by large concentrations of carbon dioxide in the atmosphere. | Runaway Greenhouse Effect |
| relatively light-colored highland areas on the surface of a moon or planet | terra |
| The . . . . . on Venus does not change with different seasons or times of day. | temperature |
| At any time, about 50% of earth is cloud-covered. Venus is cloud-covered . . . .percent of the time. | 100 |
| The space probe Magellan was sent to Venus in 1989. It was launched from the space shuttle . . . . . | Atlantis |
| Venus is very close in size to the planet . . . . . | earth |
| Because Venus and earth are close in size, their . . . . . . is about the same. | gravitational pull |
| When viewed from a telescope, Venus has a . . . . . color. | pale yellow |
| The pressure of Venus's atmosphere is very dense. It is . .. . . times higher than on earth. | 95 |
| The pressure on Venus is similar to what a human being would experience . . . . . feet below the surface of the ocean. | 3000 |
| The highest mountain on Venus is on . . . . . | Ishtar Terra |
| . . . . . . is the highest mountain on Venus. It is higher than Mt. Everest. | Maxwell Montes |
| The radar on the Magellan space probe has revealed huge . . . . volcanoes on Venus. | active |
| The spacecraft sent to Venus have included flybys, . . . . . , atmospheric entry probes, balloons, and landers. | orbiters |
| Landers sent to Venus only survive up to . . . . hours. They are destroyed by intense heat and high pressure. | two |
| Unlike other planets, Venus does not have a . . . . . | magnetic field |
| Venus has the most . . . . orbit around the sun of any planet. | circular |
| Venus exhitits phases like the . . . . | moon |
| The maximum brilliance of Venus is seeen in the . . . . . phase. | crescent |
