Ch. 3-5 Astronomy Test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| How long is a day on Mercury | 59 Earth days
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| How long is a year on Mercury | 88 Earth days
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| Which is longer on Mercury, a day or a year? | A year
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| Does Mercury orbit in a circle or oval around the sun? | Oval
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| What is the shape of Mercury's orbit called? | Elliptical
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| Is it hot or cold on Mercury? | Hot during the day, and cold at night
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| Why is it so cold at night? | One side faces away from the sun and doesn't have an atmosphere to keep in the heat
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| What kind of planet is Mercury? | Terrestrial
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| What does Mercury's surface look like? | It has craters
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| Why might it look like this? | By getting hit by asteroids
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| What would the sky look like if you were on Mercury? | Dark, because it has no atmosphere
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| When is the best time to see Mercury? | In the morning or evening, because it rises and sets with the sun
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| Large rocks orbiting the sun in our solar system (also called space rocks) | Asteroids
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| Means Earth-like; a planet that has a solid surface | Terrestrial
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| Planets that do not have a solid ground to stand on, are made of gas | Gaseous
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| Spaceships that do not transport people, are controlled by computers | Unmanned spaceships
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| The first spaceship to fly by Mercury in 1974 | Mariner 10
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| When Mercury passes between the Earth and the sun and its silhouette can be seen against the sun | Transiting the sun
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| The second spaceship to fly by Mercury in 2004 | Messenger
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| A hole on the surface of a planet or moon caused by the impact of an asteroid | Crater
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| Why did astronomers think Venus was a twin of Earth? | It is next to the Earth, and the same size
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| What would it feel like on Venus? | Hot!
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| What is the atmosphere like on Venus? | Heavy with thick, poisonous clouds
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| What is special about the rotation of Venus? | It rotates opposite of most planets, and rotates very slowly
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| Have very many spacecraft visited Venus? | Yes, 22
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| Since we can't see through the thick clouds over Venus, how do we know what the planet's surface looks like? | Radar
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| Why does Venus go through phases? | Because it orbits around the sun
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| What are the different shapes called that Venus appears to take as it orbits the sun? | Phases
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| Curved shape, like that of the moon when it is less than half illuminated | Crescent
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| Molten or melted rock that flows from a volcano | Lava
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| Name given to Venus when it is visible in the early morning just before the sun rises | Morning star
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| The toxic chemical in the heat-trapped clouds that cover Venus | Sulfuric acid
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| Name given to Venus when it is visible just after the sun sets in the sky | Evening star
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| A device that sends out signals that bounce off the surface of an object and return to the device, revealing information about that object | Radar
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| The substance that makes up everything around you, anything that occupies space | Matter
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| The measure of how much matter is in something | Mass
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| How long it takes a planet to rotate a complete turn | Rotational period (The Earth's rotational period is 24 hours)
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| The layers of mist and gases that surround a planet | Atmosphere
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| What does atmosphere mean? | Atmos-steam; sphere-ball
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| One of the gases in our atmosphere that is necessary for life | Oxygen
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| Part of an asteroid that has come through the Earth's atmosphere and reached the surface of the Earth | Meteorite
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| The imaginary line that divides the entire Earth in half between the Northern Hemisphere and the Southern Hemisphere | Equator
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| Half of the Earth | Hemisphere
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| The outermost layer of the Earth containing the oceans, dirt, rock and mountains | Crust
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| The layer of the Earth just below the Earth's crust and above the Earth's core; it is made of semisolid rock | Mantle
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| Melted rock found in the mantle of the Earth | Magma
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| The 7 things that make Earth the only planet that can support life | Perfect distance from the sun, perfect mass (size), pefect rotation, perfect atmosphere, perfect tilt, perfect land, perfect magnetosphere
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| How do those things help us live on Earth? | They protect us from too much heat, wind and dangerous particles and give us enough oxygen and gravity.
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| Why do we have different seasons? | The earth is permanently tilted in one direction.
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| What are the four major sections of the earth? (Be able to identify them also) | Crust, mantle, outer core, inner core
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Snyderpartyof7
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