Question | Answer |
What does the Torino scale? | the sytem used to rate the hazard level of an object moving towards Earth. |
Why do they study smaller objects in our solar system like comets and asteroids? | They have not changed since the solar system was formed |
What layer lies just below the crust? | Mantle |
How are inner planets and outer planets different? | they are closer together |
What is the effect of distance a planet is from the sun? | The closet a planet is to the sun, the faster it travels around the sun. |
What is the sun powered by? | nuclear fusion |
What happens during nuclear fusion in the sun? | Hydrogen nuclei combine to form helium |
What is unusual about Pluto's moon? | It's more than half of Pluto's size |
How do planets move if they are closer to the sun? | faster |
The Earth's revolution is about how long? | 365 days |
Which scientist made discoveries about motion of planets? | Johannes Kepler |
Which group of planets does Earth belong to? | the inner planets |
Which planets do not have natural satellites (moons)? | Mercury and Venus |
What tool made finding planets easier? | the telescope |
What bodies in the solar system collided to form Earth and other planets? | planetesimals |
What is Venus sometimes called Earth's twin? | Venus and Earth are similar in size and density |
Name one factor that makes life possible on Earth? | liquid water on surface |
How do scientists think oceans formed? | Millions of years of rainfall |
What is the largest planet in our solar system? | Jupiter |
What causes the moon phases? | the positions of the moon, Earth and sun |
What does a planet with a large orbit have? | long period of revolution |
What layer of the Earth is the center-most layer? | Core |
Why do active planets show fewer impact sites than our moon? | Geological activity removes their effects |
What is the current theory about the origin of our moon? | a large body impacted Earth and blasted some of its mantle into space to form the moon |
How are gas giants different from terrestrial planets? | they are made mostly of gas |
What number planet is Saturn and Venus? | Saturn is 6
Venus is 2 |
Between which two planets is the asteroid belt located? | 4 & 5 |
What is a nebula? | a large cloud of gas and dust |
What gas is added to the atmosphere during photosynthesis? | oxygen |
What is a sunspot? | a cooler area of the photoshere that may affect the climate |
When you plant a garden, where do we get the soil from? | crust |
Our solar system was formed from this... | a cloud of dust called the Solar Nebula. |
What layer of the sun do we see? | photosphere |
What kind of rotation does Venus have....which means it appears to go clockwise direction? | retrograde |
What are satellites? | natural or artificial bodies that orbit larger bodies |
What do some scientists call the dirty snowball? | comets |
What do we call a counterclockwise spin of a planet? | prograde |
In relation to the moon phases...what do waxing and waning mean? | waxing - the lit size is getting larger
waning - the lit size is getting smaller |
Know how to label the phases of the moon. | |
| |
| |
| |
| |
| |