1) The natural phenomena described in the text above are.... a) Aurora b) Solar eclipse c) Rainbow d) Shooting star 2) The colors commonly seen in rainbows according to the text are.... a) Red, yellow, green, blue b) Black, white, gray c) Red, orange, yellow, green, blue, indigo, violet d) Gold, silver, bronze 3) The shape of a rainbow that is visible from the ground is... a) Full circle b) A half circle or arc c) Straight line d) Spiral 4) The main physical process that causes the formation of colors in a rainbow is.... a) Refraction and absorption b) Reflection and interference c) Refraction and reflection d) Diffraction and polarization 5) To be able to see a rainbow, our position must be... a) Facing the sun b) Under the clouds c) Facing the moon d) Being in a dark place

report text class 9

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？