Size and Distance
how will objects look when they are closer?
What does photosynthesis make for plants?
food (glucose)
What is a chemical reaction?
a reaction that creates something new
how will objects look when they are farther?
smaller
what is the source of energy for plants in an ecosystem
the sun
Alex wants to create a chemical reaction. Which of the following will show that a chemical reaction has happened? (you can pick more than one)
A. He created light
B. The temperature changed
C. It changed shape
A and B
Why does the sun look so big to earth?
it is the closest star to Earth
What are the three things needed for photosynthesis
water, sunlight, and carbon dioxide
Ms.Parmett has two flashlights that provide the same amount of light. She has Mateo hold one, and Kevin hold the other. Mateo moves 10 feet away. Which would look brighter? Why?
Kevin's looks brighter because he is closer to Ms.Parmett. Mateo's will look duller/dimmer/not as bright because he moved farther away from Ms.Parmett.
where is carbon dioxide found?
In the air
Which of the following shows a chemical reaction
A. Food coloring is mixed into hot water
B. Ms.Parmett put a cup of water in the closet to see if anything would happen.
C. Mr.Johnson put a nail into a cup of vinegar and bubbles were produced.
D. The wind blew the leaves of a tree
C. Mr.Johnson put a nail into a cup of vinegar and bubbles were produced.