Light

What colours does white light consist of:

• Orange, Green, Pink, Magenta, Peach, Rose, Lemon

• Red, Orange, Yellow, Green, Black, Indigo, Violet

• Red, Orange, Yellow, Green, Blue, Indigo, Violet

• Red, Orange, Yellow, Grey, Blue, Indigo, Violet

People on the Island of the Colorblind have:

• NO photoreceptors in their retinas.

• NO cones in their retinas.

• NO rods in their retinas.

• Clouded lenses that block light.

Does light interact with matter (yes or no)? If yes, give an example of when you've observed this.

Elements (pure gold, copper, mercury) are made of small particles called _______. Compounds like water and carbon dioxide consist of particles called ___________.

In 1904, J. J. Thompson experimented with a beam of particles (in a cathode ray tube) that was repelled by a negatively charged plate and attracted to a positively charged plate. The particles had almost no mass. These particles are known as ___________.

• Protons

• Neutrons

• Electrons

• Neutrinos.

In 1909, Ernest Rutherford "threw" alpha particles (helium atoms) at a thin sheet of gold foil. He was shocked to see that some of the alpha particles were reflected back. This happened because the alpha particles were hitting the dense middle of the gold atoms, which is called the __________.

• Neutron

• Neuron

• Nucleus

• Nut

When an electron jumps from a higher orbit into a lower orbit (within the atom), the atom produces energy in the form of ________.

• Gamma Rays

• Light

• Heat

• Temperature

This is an example of:

• Reflection

• Refraction

• Absorption

Which of these pictures shows a reflection?

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Which is a better color to wear on a hot day?

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