Universe
Seasons
Moon Phases
plate techtonics
100
what is the universe made of?
dark energy, dark matter, and ordinary matter.
100
Season diagram
100
why do we see moon phases?
as the Moon orbits the Earth, the Sun lights up different parts of it, making it seem as if the Moon is changing shape.
100
what are tectonic plates made of?
oceanic crust and continental crust
200
How did our Universe begin and how will it end?
Scientists think the universe began with a bang.
How it will end that's a “dark” mystery.
200
why do seasons matter?
The tilt of the Earth's rotational axis and its orbit around the Sun are the main factors that cause seasonal changes
200
What is the Moon shaped like?
imperfect sphere
200
Has tectonic plates ever broken?
Yes, tectonic plates have broken in two or “shattered” into multiple pieces many times since the Earth's surface became solid.
300
How did the known structures in the Universe evolve?
Gravity gradually drew matter together to form the first stars and the first galaxies.
300
is spring warmer than winter?
during Fall and Spring we experience temperatures that are cooler than during Summer but are warmer than during Winter.
300
Can I see the Moon during the day?
We sometimes see the moon during the day
300
can we live without plate tectonic plates?
in the beginning, and a billion years after, our data indicates that we didn't need plate tectonics.”
400
How do massive black holes grow?
by capturing nearby material.
400
why is spring the best season?
With moderate temperatures and fresh air
400
Are Moon phases the same everywhere on Earth?
Yes, everyone sees the same phases of the Moon.
400
why don't tectonic plates sink?
Continental crust is lighter than oceanic crust and lighter than mantle material, therefore it floats.
500
What came before the Universe
A common misconception is that both space and time began with the Big Bang
500
what is the most popular season?
Fall
500
Are Moon phases caused by shadows from Earth?
No. The only time Earth's shadow affects our view of the Moon is during a lunar eclipse.
500
can two tectonic plates collide?
If two tectonic plates collide, they form a convergent plate boundary.