Student Exploration: Summer and Winter
Vocabulary: axis, equator, hemisphere, latitude, season, summer solstice, winter solstice
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. When during the year is the Sun highest in the sky?
Lowest?
2. When during the year is daylight longest?
Shortest?
3. Why do you think it is colder during the winter than the summer?
Gizmo Warm-up
The SPACE tab of the Summer and Winter Gizmo shows two different "snapshots" of Earth as it
orbits the Sun. The Earth at left shows June 21. The Earth at right shows December 21.
1. The white line going through the North Pole and the South Pole is Earth's axis.
Does the axis go straight up and down, or is it tilted?
2. Your latitude indicates how far you are from the equator, a
line around Earth's middle. The person in the Gizmo has the
same latitude on each date.
Turn on Show Sun rays and slowly drag the person on the
left Earth toward the North Pole What do you notice about
how the Sun rays hit the person as she is moved northward?
Equator
North Pole