Try this new sight for British sign language for science topics. It comes with video.

www.sciencesigns.ac.uk/home_glossary.asp


Lifesciences

Vertebrates (straight forearm)
Invertebrates (wiggle my arm back and forth)

Animals and Their Needs:

Food (act like I'm eating a burger with eating noices) Oxygen (take a deep breath) Water (act like I'm drinking a glass of water with gulping noise) Protection from predators (place my arms over my head and wrap my leg around my other leg while screaming)

Bacteria Shapes
3 main shapes of bacteria (show 3 fingers)
cocci--like a sphere (make a circle with both hands)
bacilli--like a rod (make an elongated circle with both hands and stretch)
spirilla--like a spiral (point with one finger and move like a spiral)

Earth Science
Astronomy

Nebula- arms stretched wide apart to show that it is immense (think of the story about catching a fish "this big" Supernova- You have to say the word like SOUP-ER nova (like Superman!) and jump, feet apart, like a cheerleader, arms raised in a high V shape and spirit fingers. Think of your body as exploding, like a SUPERNOVA! Protostar- Bring in your arms from their stretched-out nebula, (representing gravity and contracting mass) and mimic washing hands to show it's still swirling. The Big Crunch theory- clap hands once and loudly (your palms will sting a bit)

Radiation: Make a circle with your hands and arms straight up over your head (mine is usually a little to the left) to represent the sun, and then your hands separate and fingers wiggle down across your body to your right hip, showing the electromagnetic waves coming down from the sun

Conduction: Make both hands into fists, and keep one still, and make the other hand-molecule crash into it so your first fist takes the energy because it was touched by the faster-moving fist-molecule.

Convection: Make pointer fingers and stir the air in front of you so while your "hot" wrist is coming up, the "cool" wrist is falling, and the cycle continues as the "cool" wrist becomes the "hot" wrist and rises again.

I made temperature (hold hand to your forehaed, or their friend's forehead) and heat (wave hand by face) and cold (wrap arms around yourself and move hands up and down) and stratus clouds (make hands into claws and connect thumbs and connect fingers to make a pancake shape, like a stratus cloud) and cumulus clouds (outline the mashed-potato shape) and cirrus clouds (make check-marks or "Nike symbols" in the air very high over your head) and rain (start with cumulus cloud and wiggle fingers downward) and sea breeze (wave R arm in a wiggle shape to represent flow over water) and land breeze (use L arm to go straight, because it isn't over wiggly water) and psychrometer (take your right hnad and make a fist and spin it around, like you use a sling psychrometer)and evaporation (like rain, but backwards so it goes up) and condensation (start with hands wide apart over head, then bring together and pack together, like making a snowball).