Question: Choose your answer.

Which model is used by scientists to determine the properties of elements?

OPTIONS:
- a Punnett square
- the Periodic Table
- a pedigree chart
- the rock cycle
My Answer: the Periodic Table

Question: Choose your answer.

A mosquito is a type of flying insect that lays eggs in puddles or small pools of water. When larvae develop from eggs, the larvae come to the surface to get air through special breathing tubes. After one to two weeks, the larvae become pupae and then turn into adults. How would a dry summer affect a mosquito population?

OPTIONS:
- The mosquito larvae would take longer to become pupae.
- The adult mosquitoes would have fewer places to lay eggs.
- The adult mosquitoes would get fluids by feeding more often.
- The mosquito larvae would use their breathing tubes to live on land.
My Answer: The adult mosquitoes would have fewer places to lay eggs.

Question: Choose your answer.

Sugar is added to water and the mixture is stirred. Which observation is evidence that the sugar dissolved in the water?

OPTIONS:
- Less sugar is visible.
- The water is cloudy.
- The sugar turned into crystals.
- Bubbles formed in the water.
My Answer: Less sugar is visible.

Question: Choose your answer.

The North America Nebula is named for its similarity in shape to the North American continent. It was discovered within the Milky Way by astronomer William Herschel in 1790. What was Mr. Herschel most likely observing?

OPTIONS:
- the explosion following the collapse of a star
- a dense cluster of stars of varying magnitudes
- meteorites as Earth passed through the tail of a comet
- a cloud of hydrogen gas and dust where stars are born
My Answer:
a cloud of hydrogen gas and dust where stars are born