SCIENCE REVIEW 3

What is a circuit?

• A circuit is a closed loop that allows electric current to flow.

• A circuit is a type of electronic device.

• A circuit is a pathway for sound waves.

• A circuit is a method of cooking food.

Name one component of an electronic circuit.

• Diode

• Transistor

• Resistor

• Capacitor

What does a resistor do in a circuit?

• A resistor generates heat to power devices.

• A resistor limits current and controls voltage in a circuit.

• A resistor stores electrical energy for later use.

• A resistor amplifies current in a circuit.

How do animals communicate with each other?

• Animals communicate through telepathy.

• Animals do not communicate with each other.

• Animals communicate using vocalizations, body language, chemical signals, and visual displays.

• Animals use only sounds to communicate.

What is the purpose of a battery in a circuit?

• The purpose of a battery in a circuit is to supply electrical energy.

• To convert AC to DC in a circuit.

• To store data in a circuit.

• To increase the resistance in a circuit.

Give an example of a behavior that animals do to find food.

• Fish swim deep to find food.

• Rabbits dig burrows to store food.

• Bears hibernate to conserve energy.

• Hawks soar high and use their eyesight to spot food.

What is a conductor in electronics?

• A conductor is a material that allows electric current to flow through it.

• A conductor is a device that stores electric energy.

• A conductor is a material that resists electric current.

• A conductor is a type of semiconductor that blocks current flow.

How do some animals use camouflage?

• Some animals use camouflage to blend into their environment, avoiding detection by predators or prey.

• Animals use camouflage to enhance their physical strength.

• Camouflage is used by animals to communicate with each other.

• Some animals use camouflage to attract mates.

What is the function of a capacitor in a circuit?

• To amplify electrical signals in a circuit.

• To act as a resistor in the circuit.

• To convert AC to DC voltage.

• The function of a capacitor in a circuit is to store and release electrical energy.

Describe a social behavior in animals.

• Mating dances in birds.

• Cooperation in hunting among wolves.

• Grooming behavior in primates.

• Territorial marking in cats.