Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
D - Science - Ch 16
The Inner Planets
| Question | Answer |
|---|---|
| What covers most of the Earth? | water |
| Which planet is closest to the Sun? | Mercury |
| What planet is sometimes called the "evening star"? | Venus |
| What planet is called the "red planet"? | Mars |
| Why is Earth unique in our solar system? | it has liquid water at its surface |
| Which planet has a greater temperature range than any of the other planets? | Mercury |
| What is longer than this planets year? | a day on Venus |
| Why is there a reddish tinge on Mars? | because of the breakdown of iron-rich rocks |
| Which planets are often called the terrestrial planets? | the four inner planets—Mercury, Venus, Earth, and Mars |
| What are three similarities among the inner planets? | they are small, dense, and have rocky surfaces |
| Rank the inner planets according to diameter. | Earth, Venus, Mars & Mercury |
| Which planet rotates on its axis in about the same amount of time that Earth does? | Mars |
| How much of Earth's surface is covered with water? | 70% |
| What are the three main layers of Earth? | crust, mantle & core |
| What is Earth’s dense inner core made of? | iron and nickel |
| Why does Mercury have a greater range of temperatures than any other planet? | it's so close to the sun that the side facing the sun gets very hot during the day & the temperature becomes very cold at night because there is almost no atmosphere |
| What does the surface of Mercury have? | many craters |
| How many moons does Mercury have? | none |
| Why is Venus sometimes called “Earth’s twin”? | it is similar in size and mass to Earth |
| What is the gas that makes up most of the atmosphere of the planet Venus? | carbon dioxide |
| How is the rotation of Venus different from that of most other planets and moons? | it rotates from east to west and the opposite of the other planets |
| What is so thick that there is never a sunny day on Venus' surface? | the atmosphere |
| What is the greenhouse effect? | the trapping of heat by the atmosphere of Venus |
| Why is Mars called the “red planet”? | It has a slightly reddish tinge when you see it in the sky |
| What is the atmosphere on Mars composed of? | carbon dioxide |
| Why do some regions on Mars look darker than others? | wind storms arise and blow the dust around on the surface and the darker regions are often where the dust has been blown away |
| What do the polar ice caps on Mars contain? | frozen water and carbon dioxide |
| Why does Mars have seasons? | it is tilted on its axis |
| What does Mars have on its surface? | giant volcanoes |
| What are the two moons of Mars? | phobos & deimos |
Created by:
lprinke
Popular Science sets