A man fishing in a boat on a lake sees a n image of an airplane in the water. At the same time he hears a plane and turns to see the source of the sound in the sky.
Which property of light best explains why an image of the plane appears in the water?
1 point
1
Question 2
2.
What is wrong with the circuit below?
1 point
1
Question 3
3.
What is the energy of moving particles that produce heat?
1 point
1
Question 4
4.
Which of the following best shows gas state of matter?
1 point
1
Question 5
5.
Which of the following is a description of a solid substance?
1 point
1
Question 6
6.
Determine if the items on the left are soluble or insoluble.
soluble
insoluble
metal key
baking soda
tempera paint powder
sugar cubes
Breaks down into tiny pieces when mixed with water
Its appearance most likely changes when mixed with water.
The substance dissolves.
The substance does not dissolve.
Does not break down into smaller pieces when mixed with water
