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100
What is rotation?
the spinning motion of a planet on its axis
100
What is revolution?
the movement of an object around another object
100
What is gravity?
The attractive force between objects
100
What is weight?
the force of gravity on an object
100
What causes the moon to shine?
the reflection of the sun's light
200
In December, which hemisphere receives the most sunlight?
southern
200
What is the change in elevation from contour line to contour line called?
contour interval
200
Where is basalt rock primarily found?
the ocean floor
200
Who is responsible for explaining the first law of motion?
Sir Isaac Newton
200
What are the two types of crusts?
continental and oceanic
300
What are the four distinct seasons?
winter, spring, summer, autumn
300
What is the major difference between the inner core and the outer core?
The inner core is a solid dense ball of iron and nickel and the outer core is molten or liquid iron and nickel.
300
What is the heat transfer between two touching materials?
conduction
300
How big is the moon compared to the Earth?
1/6 the size
300
What is direct evidence do scientists use to learn about Earth?
rock samples or fossils
400
How long is the moon's day and year?
27.3 days
400
What is the angle of the moon during a neap tide?
90 degrees
400
What are the two factors that determine the strength of gravity?
the mass of the objects and the distances between them
400
Name the three types of heat transfer.
radiation, conduction, and convection
400
What is the term for the formation, movement, and subduction of Earth's plates?
plate tectonics
500
Why do we need to know the relief?
to know the actual height of the mountain
500
Eruptions of molten materials, magnetic stipes in rock of the ocean floor, and rocks ages are all evidence of what?
sea-floor spreading
500
Why does leap year occur?
There is a 1/4 of a day in each revolution each year. After 4 years we have a whole day (1/4 + 1/4 + 1/4 + 1/4 = 1), so we have an extra day on the calendar every 4 years.
500
What causes the phases of the moon?
the changing relative positions of the moon, Earth, and sun
500
If you fly to the moon in the next two hours, explain why your mass stays the same and why your weight changes. (points awarded for both parts)
Mass stays the same b/c the number of molecules it takes to make you you will not change in a matter of 2 hours You weight changes b/c weight it the force of gravity on an object. The moon is 1/6 the size of Earth, so it has 1/6 the gravity of Earth, so you would have 1/6 the weight on the moon compared to your weight on Earth.
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