Question: Choose your answer.

A star is a celestial object that produces its own heat and light. Which of these celestial objects is the closest star to Earth?

OPTIONS:
- Mars
- Venus
- the sun
- the moon
My Answer: the sun

Question: Choose your answer.

A student boils 100 grams of water to form water vapor (gas). What method should the student use to determine that the mass of the water vapor is equal to 100 grams?

OPTIONS:
- measuring the amount of water vapor (gas) in the air
- collecting the water vapor (gas) and cooling it back to a liquid
- weighing the beaker before and after the water is boiled
- comparing the temperature of the boiling water to the temperature of the water vapor (gas)
My Answer: collecting the water vapor (gas) and cooling it back to a liquid

Question: Choose your answer.

Most electrical wires are covered with plastic or rubber. The wires are covered with plastic or rubber because those materials

OPTIONS:
- are conductors of electricity
- make complete electric circuits
- are not conductors of electricity
- make the electricity move quickly
My Answer: are not conductors of electricity

Question: Choose your answer.

Which of the following questions is testable in a scientific investigation?

OPTIONS:
- Are dogs better pets than cats?.
- Are dogs happy when they are walked?.
- Are cats more active at night than during the day?.
- Are cats easier to take care of than dogs?.
My Answer:
Are cats more active at night than during the day?.