Why could anyone be a photographer using Eastman's box cameras?

• People didnt need special equipment or dangerous chemicals

• The Eastman Company developed the film

• The box cameras contained inexpensive celluloid film

• All of the above

What do seismographs record information about?

• wind

• ocean waves

• earthquakes

• tornadoes

Why is it hard for companies to say that their products do not contain any GM foods?

• because pollen from GM crops can spread to the crops in other fields

• because not all farmers tell hte companies that they grow GM crops

• because some GM seeds aren't correctly labeled

• because companies don't always know what ingreadients their food contains

Choose the word that best completes the sentence.
During an earthquake, ______ move through the ground, causing it to shake.

• seismic waves

• atmosphere

• wavelengths

• asphalt

Choose the word that best completes the sentence.
Every color of light has a different _______.

• seismic wave

• atmosphere

• wavelength

• asphalt

Choose the word that best completes the sentence.
Copper and glass plates were replaced by_______ film that was less expensive.

• seismic waves

• atmosphere

• celluloid

• asphalt

Choose the word that best completes the sentence.

Satellites that are no longer in use eventually reenter Earth's _______ and burn up.

• seismic waves

• atmosphere

• celluloid

• asphalt

What is one benefit and one risk to genetically modifying crops?

What are two different kinds of satellites and how are they each used?