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Story Questions
1. 
Which statement explains how scientists learn about the history of the Earth?
a. All rocks break down by being exposed to the weather.
b. Geologists study rocks to determine how they were made.
c. All rocks are combinations of one or more minerals.
d. One way that rocks are formed and built up is from volcanic activity.
2. 
The main idea of this passage is . . .
a. to inform the reader about what happens when a volcano explodes.
b. to inform the reader about the connection between the earth’s crust and rocks.
c. to inform the reader about how important erosion is to breaking down rocks.
d. to share general information about the geology and the study of rocks.
3. 
Where can you find information about how rocks are formed and broken down?
a. second paragraph
b. not in the passage
c. fourth paragraph
d. third paragraph

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59 
#3491 Daily Warm-Ups: Reading
Static Electricity
Have you ever seen your hair sticking straight up in the air all by itself? Or how about the last time you 
dragged your foot across the floor and got a shock? This was probably static electricity. But how does 
static electricity work?
Everything is made up of atoms. Particles called electrons are part of every atom. These electrons have 
an electric charge. This charge is negative and is the cause of electricity.
Static electricity isn’t really static at all. It involves electrons that move from one place to another.
Static electricity is different because it doesn’t flow from one place to another in a current like most 
electricity.
Electrons move from one object to another by vigorous rubbing or brushing. There is an electric field 
around each object. The field affects objects and produces unlike charges in them. The unlike charges 
are attracted to each other. Sometimes static electricity makes a popping sound.
Warm-Up 3
Name _________________________ Date _________
Nonfiction: Science