Which term most accurately describes a planet at position 1 in the diagram?
a
inertia
b
aphelion
c
periphelion

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.

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.

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency