Keisha is making a diagram of a simple machine in the body. A flexed arm has labels X for the hand, Z for the forearm, and Y for the elbow. Which labels complete the diagram? X: load Y: fulcrum Z: lever X: fulcrum Y: wedge Z: load X: wedge Y: fulcrum Z: load X: lever Y: load Z: fulcrum

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

True or false graphs must include scales that increase by the same amount