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WorksheetsMidterm Review: U1 Astronomy
Total questions: 15
Worksheet time: 8mins
A planet is discovered to orbit a star.
Using Kepler's 1st Law, describe this orbit.
the orbit is circular with the star in the center
the orbit is a triangle with the star at the edge
the orbit is a square with the star at the corner
the orbit is elliptical with the star at the focus
This image shows a planets orbit around the Sun. The gray areas are EQUAL.
According to Kepler's 2nd Law, what is TRUE?
the planet is moving fastest from A to B (because it is near the Sun)
the planet is not moving
Star A has a mass of 70,000kg.
Star B has a mass of 78,000kg.
Where would the barycenter be located?
HINT: The barycenter is CLOSER to the BIGGER object!
closer to Star A;
because Star A has a greater mass
closer to Star B;
because Star B has a greater mass
In the year 14,000, Earth axis will change direction and will point to the star Vega instead of Polaris.
What movement BEST describes this?
rotation
revolution
precession
nutation
Why does Earth have seasons?
Earth's rotation
Earth's size
Earth's tilt
Earth's color
What would happen if Earth's axis was NOT tilted?
the entire Earth would experience the same season at all times
seasons would switch back and forth every 6 months randomly
Earth rotates on it's axis.
How long does this action take?
1 minute
24 hours
12 days
1 year
If the Northern Hemisphere is in Summer, the Southern Hemisphere is in Winter.
Why are these seasons opposite?
the seasons like opposite day
the Earth is tilted, so each hemisphere is heated unevenly
there are more clouds in the Southern Hemisphere
this is not true
How do stars, like the Sun, produce energy?
atoms go through fusion
atoms go through fission
atoms use the oven to heat up food
What is Earth's primary source of electromagnetic energy?
batteries
the moon
the Sun
the ocean
Earth's surface heats up differently by the Sun.
Which of the following is TRUE?
liquids and solids absorb and store heat differently
photosynthesis only can happen in warm oceans
In the Summer, sunlight is _____________.
travelling faster
colder
more intense
off
Why do plants need solar energy?
to maintain a stable temperature
to shrink in size
to produce nuclear fusion
to convert into chemical energy (food)
Which statement BEST describes the relationship between photosynthesis and solar energy?
photosynthesis destroys solar energy
photosynthesis does not change solar energy
photosynthesis transforms solar energy
Why is Earth's equator warmer than the poles?
the equator receives more direct sunlight
the equator is on fire
the poles have more ice cream
this is not true
