Science
Force
Something with a definite size, shape, purpose, and can hold a load is a ...
Structure
Is the sun an example of a natural or artificial light source?
Natural
What is an example of an artificial light source?
Answers with vary
An example of a natural structure is...
Answers will vary
Wind, water, and the movement of the Earth are all examples of this type of force...
External
An object that lets some (but not all) light pass through is...
Translucent
An object may appear bent in water due to...
Refraction
An internal force that squeezes something together is...
Compression
An internal force that expands or lengthens is...
Tension
An object that appears blue ___________ blue light and ___________ other colours of light.
reflects, absorbs
Different wavelengths of light result in...
Different colours (some are invisible to the eye)
An internal force that pushes in opposite directions is...
Shear
An internal force with a twisting motion is...
Torsion
The moon and a safety vest are similar sources of light because they both...
Reflect light from other light sources
It is harder to see the stars in the city because...
There are a lot of artificial light sources (light pollution)
This type of bridge can span 2,000 to 7,000 feet -- way farther than any other type of bridge!
Suspension Bridge
This type of bridge is made up of steel triangles.
Truss Bridge
Glasses, contact lenses, cameras
Why does an arrow appear backwards when viewed through water? (This requires more than a one-word answer)
The light moves at different speeds through the glass, water, and air.