Which mixture could you separate most easily using filter paper? sugar and water, lemon and water, vinegar and oil, or salt and sugar
What is vinegar and oil
Bob uses balloons to investigate static electricity. What will happen if she brings two positively charged balloons close to each other?
a. they will come together
b. they will move apart
c. one balloon will lose its charge
d. one balloon will turn into a magnet
What is they will move apart.
Why are electrical wires usually covered in plastic?
a. plastic is a good conductor
b. plastic is a good insulator
c. plastic makes the wire stronger
d. plastic helps electricity flow faster
What is plastic is a good insulator
How is an electromagnet different than a bar magnet?
What is an electromagnet can be turned on and off by starting or stopping the flow of electricity.
What would help slow the erosion of a bare hillside from rainfall?
What is growing plants.
When balloons are faced side by side, two balloons stay where they are placed. They do not move any closer together. They do not move any further apart. What could you say about the balloons?
What is they are uncharged.
Which of the following is NOT a chemical change? Cookie dough bakes, Toast burns, Bread molds, or Folding paper
Which of the following is built by waves and currents? Plain, Volcano, Mountain, or Barrier island
What is a Barrier island
The movement of which of Earth's layers causes plates to move?
What is the mantle
Which of the following is an instinct? Seeing a dog, Bird making a nest, Riding a bike, or Reading a book
What is Bird making a nest
Which of these is a chemical change?
A. Melting an ice cube
B. Breaking a glass bottle
C. A bicycle rusting in the rain.
D. Mixing salt into water
What is c (a bicycle rusting in the rain)