Question

❤Hello Everyone! Everyday Birthday! I am New here and i want to see If anyone can help me with questions for preparation of my test❤

1. Which of the following BEST describes what a thermometer measures?
A.
average kinetic energy of a substance’s molecules
B.
rate of flow of heat from the sun
C.
the melting point and boiling point of a substance
D.
amount of heat energy contained in a substance

2. An example of the conversion of gravitational potential energy into kinetic energy is

A.
gasoline-powered engine
B.
A hockey puck sliding on ice

C.
striking a match
D.
a falling raindrop

3. Which of these statements BEST represents the law of conservation of energy?
A.
The total energy in a system decreases over time.
B.
The energy created by machines can be lost.
C.
Energy is being created in the universe every day.
D.
mgh = 1/2mv2

4. An example of electromagnetic energy is

A.
a stretched spring
B.
a speeding train
C.
a falling rock
D.
sunlight

5. What mass of water will change its temperature by 3.00C when 525J of heat is added to it?
The specific heat of water is 4.18 (J/g•0C)

*More questions to come, so be prepared with your thinking caps on! ❤

Answer 1

Explanation:

hii welcome..r you new ..I m also new on the next answer I will answer your all questions

Answer 2

Answer:

Electromagnetic waves are waves that can travel through a vacuum, like in space. This is possible because they're not vibrations in an actual material; they're fluctuations in electric and magnetic fields. Examples of electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. Radio waves have the lowest energy and frequency and the longest wavelength. Gamma rays have the highest energy and frequency and the shortest wavelength.