Photosynthesis and Carbon Cycle Concepts

What did Amy and Matt finish excavating at the dig site?

• A dinosaur jawbone

• A treasure chest

• A gold nugget

• A rare plant

Why did Tess call for a water break?

• The heat was fierce

• It started raining

• They found a new fossil

• The tools broke

What did Kristal do while Julian worked on the dinosaur foot bones?

• She sketched Julian

• She dug for fossils

• She mixed plaster

• She took a nap

What is a chemical change, according to the conversation in the text?

• A process where atoms are shuffled to form new combinations and new types of matter

• A process where matter stays exactly the same

• A process where only the shape of matter changes

• A process where matter disappears completely

Why did Felix compare chemical changes to recycling?

• Because both involve making something completely disappear

• Because both involve remaking something new from the same materials

• Because both involve using only new materials

• Because both involve breaking things into smaller pieces

What happened to some of the plant life that died 300 million years ago?

• All of it turned into diamonds

• All of it decomposed quickly

• Some decomposed, some fossilized, and some became oil and coal through chemical changes

• All of it floated away in the ocean

Based on the story, why are chemical changes described as the "ultimate recyclers"?

• Because they destroy all matter

• Because they recombine the same elements in new ways to form new types of matter

• Because they only work with plastic

• Because they only happen in factories

What process do plants use to change water and carbon dioxide into sugar and oxygen using sunlight?

• Respiration

• Photosynthesis

• Fermentation

• Digestion

According to the passage, what happens to the oxygen produced during photosynthesis?

• It stays inside the plant

• It is released into the air

• It turns into water

• It becomes part of the soil

How can carbon atoms from ancient plants end up in a modern plastic bottle?

• They are mined directly from rocks

• They are recycled from old bottles

• They were once part of oil formed from ancient plants, and then used to make plastic

• They are created in factories from scratch