test 2

[Blank] first measured the speed of light.

[Blank] measured the speed of light more accurately than previous scientists.

[Blank] thought he could burn enemy ships with reflected light from the sun.

[Blank] thought beams of light came from our eyes.

[Blank] came up with the law of reflection.

[Blank] accurately described how vision really worked and diagrammed the eye.

[Blank] perfected the telescope and made many discoveries such as the moons of Jupiter.

[Blank] built the first microscope in 1595.

[Blank] used the microscope to discover 'little animalcules'.

The Hubble Space Telescope can show clearer pictures of space objects than a telescope on Earth's surface because there is no ______ in space to get in the way.

Light is a form of ______.

Telescopes provide ______ images.

Telescopes ______ light from distant objects.

A refracting telescope uses two ______.

A reflecting telescope uses a curved (concave) ______ and a lens.

Light travelling from a source in straight lines is called light ______.

Each light ray ends in an arrow to indicate ______.

Light rays travel ______ from a light source in every direction.

Transparent materials can ______ light.

Translucent materials allow only ______ light to pass through.

When parallel rays reflect off a smooth surface in a predictable pattern, it is a ______ reflection.

An imaginary line, used to measure angles from, perpendicular to the mirror at the point of reflection is called the ______.

The angle between the incident ray and the normal is called the ______.

A mirror with a surface that curves inward like a bowl is called a ______ mirror.

Parallel rays that hit a concave mirror reflect and head to a common point called the ______.