Q: A student used two long wires to connect a lightbulb to a battery. The student noticed that as soon as the circuit was complete, a nearby compass started to point in a direction other than north. The compass pointed in a different direction because it was reacting to the

OPTIONS:
- heat produced by the lightbulb.
- light produced by the lightbulb.
- electric field produced by the battery.
- magnetic field produced by the electric current.
A: magnetic field produced by the electric current.
Q: Beaver dams can cause floods. This statement shows how

OPTIONS:
- animal growth is affected by environmental conditions
- animal behavior may affect the environment
- an animal's health depends on its environment
- an animal's development depends on its environment
A: animal behavior may affect the environment
Q: In the solar system, moons orbit planets. Which of these do planets orbit?

OPTIONS:
- the Sun
- Halley's comet
- the asteroid belt
- a black hole
A: the Sun
Q: The Moon is visible to observers on Earth because of

OPTIONS:
- reflected sunlight
- absorbed light from Earth's atmosphere
- gases in the Moon's interior
- volcanic eruptions on the Moon's surface
A:
reflected sunlight