Rotation & Revolution
What causes day and night on Earth?
Earth's rotation
What is the tilt of Earth's axis?
23.5 degrees
What causes the Moon's phases?
The Moon's orbit and reflected sunlight
What causes Earth's tides?
The gravitational pull of the Moon and the Sun
What kind of sunlight spreads over a smaller area and is more intense?
Direct sunlight
How many hours does it take Earth to complete one rotation?
24 hours
When the Northern Hemisphere is tilted toward the Sun, what season is it there?
Summer
How long does one Moon orbit take?
29.5 days
What kind of tide happens when the Earth, Moon, and Sun are in a straight line?
Spring tide
What kind of sunlight hits Earth at a lower angle and spreads over a larger area?
Indirect sunlight
Why don't we feel the Earth rotating?
It spins smoothly at a constant speed
What is it called when day and night are about the same length?
Equinox
What is the phase when we can't see the Moon at all?
New Moon
During which moon phases do spring tides occur?
Full moon and new moon
What factor describes how high the Sun appears in the sky?
Sun angle
How long does it take Earth to revolve around the Sun?
About 365
Why does the equator have a more consistent climate year-round?
What is it called when more than half of the moon is lit, but it's not yet full?
Waxing Gibbous
What kind of tide occurs when the Sun and Moon are at right angles to each other?
Neap tide
What are two things that affect a location's average temperature?
Daylight hours and sun angle
What two motions of Earth are responsible for its day/night cycle and the seasons?
Rotation and revolution
Why do poles have extreme differences in daylight across seasons?
Because of the tilt and Earth's revolution
Why do we always see the same side of the Moon?
Because of synchronous rotation
What happens to the ocean during a spring tide?
Higher high tides and lower low tides
Why do places near the equator have consistent daylight and weather all year?
They receive similar direct sunlight year-round