Sun, Moon & Seasons
Earth spins on its axis once every this long, giving us day and night.
24 hours
Earth's outer layer is broken into giant moving pieces called these.
Tectonic plates
Weather changes day to day. This is the average weather of a place over many years.
Climate
Rock that forms when melted rock cools and hardens.
Igneous
Katy Perry hit that compares a person to an explosive light show in the sky.
Firework
Earth takes about this long to travel once around the Sun.
One year (365 days)
At this kind of plate boundary, two plates move apart.
Divergent
The instrument used to measure air pressure.
A barometer
Rock made of layers of sediment pressed together, where most fossils are found.
Sedimentary
Taylor Swift song whose title sounds like advice for surviving an earthquake.
Shake It Off
We have seasons because Earth's axis is this.
Tilted
At this kind of plate boundary, two plates push together and can form mountains.
Convergent
Warm air does this, and as it cools, clouds can form.
Rises
Rock that has been changed by heat and pressure without melting.
Metamorphic
Imagine Dragons song named for the energy given off by unstable atoms.
Radioactive
The changing shapes of the Moon we see from Earth over about a month.
Moon phases
California's San Andreas Fault is this kind of boundary, where plates slide past each other.
Transform
Gases like carbon dioxide trap heat in the atmosphere. This is the name for that effect.
The greenhouse effect
In rock layers that haven't been disturbed, the oldest layer is found here.
At the bottom
Coldplay song named for what you see on a clear night away from city lights.
A Sky Full of Stars
The theory that the universe began as one tiny, hot point and has been expanding ever since.
The Big Bang theory
Matching fossils and rocks in South America and Africa are evidence for this idea.
Continental drift
Wind blows from areas of high pressure toward areas of this.
Low pressure
Scientists find the actual age of a rock by measuring this steady breakdown of unstable elements.
Radioactive decay
SZA's 2024 single named after the planet with the famous rings.
Saturn