Zoom in / out and automatic tilt at ground level

right click+ `arrow up` / `arrow down`

All hotkeys for Google Earth 5 (Windows)

3D Viewer - Keyboard Only Move viewer left, right, up, or down	`arrow keys`
3D Viewer - Keyboard Only Move viewer in smaller increments	`alt` + `arrow keys`
3D Viewer - Keyboard Only Rotate view clockwise / counter-clockwise	`shift` + `arrow left` / `shift` + `arrow right`
3D Viewer - Keyboard Only Tilt view up / down	`shift` + `arrow down` / `shift` + `arrow up`
3D Viewer - Keyboard Only Rotate and Tilt in small increments	`alt` + `shift` + `arrow keys`
3D Viewer - Keyboard Only Shift perspective right / left	`ctrl` + `arrow left` / `ctrl` + `arrow right`
3D Viewer - Keyboard Only Shift perspective up / down	`ctrl` + `arrow down` / `ctrl` + `arrow up`
3D Viewer - Keyboard Only Shift perspective in small increments	`alt` + `ctrl` + `arrow keys`
3D Viewer - Keyboard Only Zoom in / zoom out in small increments	`+` / `-`
3D Viewer - Keyboard Only Zoom in / zoom out in larger increments (or use page up / page down)	`ctrl` + `shift` + `+` / `ctrl` + `shift` + `-`
3D Viewer - Keyboard Only Reset View to rotate to "North up"	`n`
3D Viewer - Keyboard Only Reset angle to view scene in "top-down" or "up" mode	`u`
3D Viewer - Keyboard Only Reset angle to view "top-down" and rotates to "north-up" view	`r`
3D Viewer - Keyboard with Mouse Move viewer left, right, up, or down	click+drag
3D Viewer - Keyboard with Mouse Rotate the view clockwise / counter-clockwise	`shift` +click+drag left / right
3D Viewer - Keyboard with Mouse Tilt view up / tilt view down	`shift` + lick+drag up / down
3D Viewer - Keyboard with Mouse Point perspective to the right / to the left	`ctrl` +click+drag left / right
3D Viewer - Keyboard with Mouse Point perspective up / down	`ctrl` +click+drag up / down
3D Viewer - Keyboard with Mouse Zoom in / out and automatic tilt at ground level	right click+ `arrow up` / `arrow down`
3D Viewer - Keyboard with Mouse Start Motion	double-click or drag+release mouse
3D Viewer - Keyboard with Mouse Stop Motion	`spacebar` or click
Adjust View Switch to Full Screen	`f11`
Adjust View Show or hide sidebar	`ctrl` + `alt` + `b`
Adjust View Hide or show overview Window	`ctrl` + `m`
Google Earth Features Open file dialog box	`ctrl` + `o`
Google Earth Features Save current view as Image	`ctrl` + `alt` + `s`
Google Earth Features Print dialog box	`ctrl` + `p`
Google Earth Features Email view	`ctrl` + `alt` + `e`
Menus Open File Menu	`alt` + `f`
Menus Open Edit Menu	`alt` + `e`
Menus Open View Menu	`alt` + `v`
Menus Open Add Menu	`alt` + `a`
Menus Open Tool Menu	`alt` + `t`
Menus Open Help Menu	`alt` + `h`
Places Panel Copy selected item	`ctrl` + `c`
Places Panel Cut selected item	`ctrl` + `x`
Places Panel Paste item	`ctrl` + `v`
Places Panel Find item	`ctrl` + `f`
Places Panel Delete selected item	`delete`
Places Panel Edit selected Item	`ctrl` + `alt` + `r`
Places Panel Zooms into selected item	`enter`
Create Items on Map Create new Placemark	`ctrl` + `shift` + `p`
Create Items on Map Create new folder	`ctrl` + `shift` + `n`
Create Items on Map Create new image Overlay	`ctrl` + `shift` + `o`
Create Items on Map Create new Model	`ctrl` + `shift` + `m`
Create Items on Map Create new Path	`ctrl` + `shift` + `t`
Create Items on Map Create new Polygon	`ctrl` + `shift` + `g`