EXT: Explain why a show is produced in both pictures. State the order in size of the moon, Sun and Earth. Describe the differences between solar and a lunar eclipse. EXT: Explain why a show is produced in both pictures.

How fast does sound travel through a solid, liquid and gas? Keywords: Vibrate, particles, medium, vacuum, speed What is the difference between a wave? Transverse Longitudinal What is sound? How fast does sound travel through a solid, liquid and gas? Draw what loud and quiet sound looks like. What is the difference if the frequency changes? Waves Sound Light What does Transparent, translucent and opaque mean? Eustachian tube What is reflection? Why are some images reflected off a surface and why are some not? How can your sight be corrected using lenses? What happens to the light? Which is faster sound or light? Why? How do you calculate the frequency of a wave? What is refraction? Use a diagram to show what happens to light near the normal line. What are the primary colours? Why do you see the grass as a green colour? What is white light made up of? What happens when you see the colour black?

How fast does sound travel through a solid, liquid and gas? Keywords: Vibrate, particles, medium, vacuum, speed What is the difference between a wave? Longitudinal: Sound wave moves in the ________it travels Transverse: Sound travels at _____angles to the direction What is sound? How fast does sound travel through a solid, liquid and gas? Draw what loud and quiet sound looks like. What is the difference if the frequency changes? Waves Sound Light What does Transparent, translucent and opaque mean? Light can’t go through, some light can and all light can go through. Eustachian tube What is reflection? How can your sight be corrected using lenses? What happens to the light? Which is faster sound or light? Why? How do you calculate the frequency of a wave? What is refraction? Use a diagram to show what happens to light near the normal line. What are the primary colours? Why do you see the grass as a green colour? What is white light made up of? What happens when you see the colour black?

Reflection

Refraction through a glass block: Wave slows down and bends towards the normal due to entering a more dense medium Wave slows down but is not bent, due to entering along the normal Wave speeds up and bends away from the normal due to entering a less dense medium

In the SAME coloured light Filter White light Red Light passes through Ray Box The pencil is RED so REFLECTS the RED light We see the pencil as RED

In a DIFFERENT coloured light The pencil is RED so ABSORBS the indigo light. We see the pencil as BLACK because NO colours are reflected Filter White light Ray Box Indigo Light passes through

At right angles In the same direction