How does the author use imagery in the novel, Toning the Sweep?

Examples of Imagery:

"Martha Jackson's hair is the color of coal and she must be about my grandmama's age. She cuts her hair short, and sometimes it sticks straight up, but she doesn't care. She's probably one of the tallest people I know, and walks like she's swimming, and that's all the time."

"The boxes are full of hats and scarves. I used to go into Ola's room and spend the day there trying on every hat and scarf she had in the place. They were everywhere in her room. She had pegs on the walls and doors just for the hats and scarves. I'd daydream there for hours."

"Mama's arms are long. They flow when she moves. The wind seems to take them. She sits down on the hard ground and looks off into the desert again. Her face relaxes as she watches Jake chase imaginary birds. He floats in the wind, his furry body looking like a fluff of dust in a breeze. I sit down in the dust beside Mama."