__________ lenses refract light rays in toward a central point. When this lens is held close to your eye, the image is magnified and right side up.

Light travels slowest in high density media, faster in lower density media, and fastest in low density media. Which wave behavior is observed when light passes through media of different densities?

A new company is making security cameras. These security cameras will be different than other security cameras because instead of detecting motion, they will detect body heat. What type of electromagnetic wave will the camera detect?

Bats use echolocation to find their prey. If the prey is moving away from the bat, the returning echo will have a lower pitch than the original sound, while the echo from the prey moving toward the bat will have a higher pitch. Which is true?

Cassie noticed that when she placed a straw in a glass of water, the straw appeared to be broken and part of the straw in the water appear to be larger than the part that was not in the water. Which BEST explains Cassie's observations?

You bring the charged portion of a balloon close to a classmate’s hair and watch as the hair sticks to the balloon. The teacher explains that this is due to the negative charge on the hair. What is the charge on the balloon?

A student rubs a neutral balloon with a cloth on a cool, dry day. The balloon gains electrons. Which of the following is an accurate description of what occurred, and why?

A positively charged rod is brought near the LEFT side of a metal sphere. Which of the following accurately represents the charge distribution in the metal sphere

Allison makes an electromagnet and switches on the circuit and brings some paper clips near the iron rod. The paper clips are attracted to the iron rod. Which of the following will cause the paper clips to fall off the iron rod?

What results when energy is transformed while juggling three bowling pins?

You and your lab group have been asked to design an investigation to determine the effects of heat transfer between two different objects. Which of the following investigation designs explains the heat transfer when atoms directly touch?

Which argument supports the Law of Conservation of Energy within a system?

If a pendulum has 6 Joules of potential energy at its highest point, how many Joules of kinetic energy will it have at its lowest point?

Where does a bar magnet have the strongest magnetic force?

Which of the following is NOT TRUE for an oscillating (swinging) pendulum?

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