All About Science

If you are using a scale, what property are you measuring for?

• Magnetism

• Temperature

• Mass

• Length

Blowing air into a balloon causes gases to fill it. Which of the following statements is true about a gas?

• A gas has a definite shape.

• A gas takes the shape and size of its container.

• A gas has a definite size but takes the shape of its container.

• A gas has a definite size and shape.

John and his friends went to the pool with toy plastic boats. They each pressed the boat down to the bottom of the swimming pool then let it go. What will most likely happen?

• The plastic boats will sink to the bottom and stay there.

• The plastic boats will rise to the top.

• The plastic boats will stay suspended in the middle of the pool.

• The plastic boats will move sideways underwater.

Look at your desk. Why is the desk an example of a solid?

• The desk changes size when you work on it.

• The desk changes shape when it moves.

• The desk keeps a definite shape.

• The desk melts when heated.

Which of the following are examples of matter changing as its properties cool? Select two answers.

• Swimming in the summer, but not in the winter because the pool is frozen.

• Going outside with ice cream, then the ice cream melts.

• Taking ice and putting it into a pot to watch it boil.

• Lighting a candle, which turns into a liquid and then hardens as it sits.

Why are there tiny droplets of water on the can?

• The water vapor in the air touches the cold can and causes condensation.

• The warm air causes evaporation.

• The can is leaking soda.

• The can is melting.

Which material is better for windows in new apartments, plastic or glass, and why?

• Plastic is better because it will not break.

• Glass is better because it is easier to break compared to plastic.

• Plastic is better because it can be changed easily.

• Glass is better because it is stronger than plastic.

When you kick a soccer ball into the air, when does gravity pull on the ball?

• Only when the ball is going up.

• Only when the ball is falling.

• Only when the ball hits the ground.

• All the time, whether the soccer ball is moving or not.

Lionel Messi, the famous soccer player, jumps up to block the ball. What are some of the pushes and pulls that you would see? Select two answers.

• The player is wearing Nikes.

• The other team kicked the ball, pushing the ball.

• The sunny day makes everyone want to play soccer.

• Gravity pulling Messi back to the ground when he jumps into the air.

Which of the following scenarios best illustrates the concept of mechanical energy?

• A car parked in a garage.

• A book resting on a shelf.

• A bowling ball moving across the floor.

• A light bulb glowing in a lamp.