Tommy and Suzy (brother and sister) went to the playground one afternoon with their mom and dad, Jan and Dean. They were playing a game of tag and having the best time ever running after each other and laughing. They liked to play tag instead of building sandcastles or swinging. They liked tag because they liked to run. They like to play hopscotch or jump rope but that day they wanted to play tag. Other games aren't as fun. They met Tony and Ally (who are best friends) and invited them to play tag too. Tony and Ally like to play other games like hopscotch or jump rope but that day they joined the game of tag. Making new friends is important. Tony and Ally would rather make friends than play their favorite games.

Question: "Who invited Tony and Ally to play tag?"

Answer: "Suzy"

Response: yes

I've been thinking about the mindwipe, now two days away. Who said that those who forget the past are doomed to repeat it? I fear that may be true for me. Add this to the reasons I write now: to remember something, perhaps even to learn -- Emil Malaquez arrived after sundown, carrying a small package wrapped in what looked like real paper. His evening dress was formal, expensive, and slightly stained, as that of all forgetful artists should be. He was a jovial man with an easy laugh, and even uglier than Tasha had suggested. I liked him immediately. "Senor Malaquez?" "Please. Call me Emil. You must be Bernardo. Tasha's told me much about you." "All of it outrageous praise?" "All of it." "Ah, she is wonderfully perceptive." He raised an eyebrow, then guffawed. "Has she said as much about me?" "She thinks you are a genius. Do come in." "Thank you."

Question: "Whose evening dress was formal?"

Answer: "Senor Malaquez"

Response: yes

Static electricity is like a teeter-totter. What happens if a teeter-totter is balanced? Correct! It does not move. What about when its not balanced? Yes, it will now begin to move. Charges move when they are not balanced. Charges can build up by friction. Maybe you rub your feet on a wool mat or carpet. Rubber soled shoes readily gain charges. The wool carpet easily gives up charges. The two items become unbalanced. One item has a positive charge. The other has a negative charge. The difference in charge is called static electricity. Just like the teeter-totter, something is going to move. Positive charges build up on the mat. Negative charges build up on you.

Question: "What happens if a teeter-totter is balanced?"

Answer: "It means the charges are imbalanced"

Response: no

Density is also an important physical property of matter. The concept of density combines what we know about an objects mass and volume. Density reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter is more dense. Differences in density of matter explain many phenomena. It explains why helium balloons rise. It explains why currents such as the Gulf Stream flow through the oceans. It explains why some things float in or sink. You can see this in action by pouring vegetable oil into water. You can see a colorful demonstration in this video.

Question: "How can I observe the role density plays?"

Answer: "By watching the animation or by adding oil to water yourself"

Response:
yes