Making a clock Video Setting your sundial Video

Making a clock Video

Setting your sundial Video

Making a reaction timer How fast are your reactions? Get your partner to check your reactions by dropping a ‘fiver’ and seeing if you can catch it. Do this when you’re concentrating and when they’re trying to distract you.

Calibrating your ruler �The faster your reactions the less distance the ruler will fall- the distance the ruler falls is proportional to the length of time it falls for. �To calibrate the ruler you have to calculate how long it takes to fall every 5 cm. �Use the equation to work out the time:

Measuring reaction time �Find the reaction time of your partner. �Is one reading enough? �Calculate their average reaction time; should you include anomalies? �What are the limitations of this experiment? �What improvements can you make?

Factors affecting reaction time �When you learn to drive there will be several factors that affect your reaction time, what will they be?

Word search e q u i n o x o e r c i atomic equinox longitude sidereal o d w o d a h s s c i l e q e a t o r o l e m n l a i t s e l e c a o d caesium freefall meridian star a m e r i d i a n s t u l l d g g n u u a i i s n u e r n n s i o w t m s e r o d o o m n e u r e t e i s o l m o t celestial gnomon noon sun d r l l a f e e r f o i e i n l l r l l u m n n equator latitude shadow sundial