In an investigation of potential and kinetic energy, a student stands at the top of a hill and pushes a ball down the hill as shown.

Question

How does the potential and kinetic energy of the ball change as the ball rolls down the hill?

(1 point)
Responses

The potential energy of the ball increases, and the kinetic energy of the ball decreases.
The potential energy of the ball increases, and the kinetic energy of the ball decreases.

The potential energy of the ball decreases, and the kinetic energy of the ball increases.
The potential energy of the ball decreases, and the kinetic energy of the ball increases.

The potential and kinetic energy of the ball both increase.
The potential and kinetic energy of the ball both increase.

The potential and kinetic energy of the ball both decrease.
The potential and kinetic energy of the ball both decrease.

Question
A light is connected to a battery as shown below.

What type of energy transfer occurs?

(1 point)
Responses

Electrical energy to mechanical energy to light energy
Electrical energy to mechanical energy to light energy

Mechanical energy to electrical energy to light energy
Mechanical energy to electrical energy to light energy

Chemical energy to mechanical energy to light energy
Chemical energy to mechanical energy to light energy

Chemical energy to electrical energy to light energy
Chemical energy to electrical energy to light energy

When a match is struck, what forms of energy does the burning match give off?(1 point)
Responses

Solar energy and nuclear energy
Solar energy and nuclear energy

Light energy and thermal energy
Light energy and thermal energy

Thermal energy and solar energy
Thermal energy and solar energy

Nuclear energy and light energy
Nuclear energy and light energy

When you add cold milk and hot chocolate, they will slowly blend as the cooler liquid mixes with the warmer liquid. Eventually, the heat will be spread out evenly through the entire liquid. Which statement best explains why this happens?(1 point)
Responses

The molecules of the two liquids form chemical bonds to spread energy.
The molecules of the two liquids form chemical bonds to spread energy.

Cold liquids rise and hot liquids sink making the liquids mix.
Cold liquids rise and hot liquids sink making the liquids mix.

Heat always moves from areas of higher temperature to areas of lower temperature.
Heat always moves from areas of higher temperature to areas of lower temperature.

The liquids attract each other because the densities of the liquids are the same.

Simone has a mug of hot tea at a temperature of 90°C. She sets the mug on a counter in a room with an air temperature of 30°C. What is most likely to happen to the temperature of the hot tea?(1 point)
Responses

The air will transfer thermal energy into the tea and will continue to transfer energy until they are both 90°C.
The air will transfer thermal energy into the tea and will continue to transfer energy until they are both 90°C.

The air will transfer thermal energy into the tea, and the energy transfer will continue until the tea is at room temperature.
The air will transfer thermal energy into the tea, and the energy transfer will continue until the tea is at room temperature.

The hot tea will transfer thermal energy into the air, and the energy transfer will continue until the tea is at room temperature.
The hot tea will transfer thermal energy into the air, and the energy transfer will continue until the tea is at room temperature.

The hot tea will transfer thermal energy into the air and will continue to transfer energy until they are both 90°C.

A woman runs as shown.

What main energy conversion occurs?

(1 point)
Responses

Mechanical energy changes into thermal energy because the energy from motion creates heat in the air around the runner.
Mechanical energy changes into thermal energy because the energy from motion creates heat in the air around the runner.

Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner’s motion.
Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner’s motion.

Mechanical energy changes into chemical energy as the kinetic energy from motion creates reactions in the surrounding air.
Mechanical energy changes into chemical energy as the kinetic energy from motion creates reactions in the surrounding air.

Thermal energy changes into mechanical energy because heat provides energy for motion.
Thermal energy changes into mechanical energy because heat provides energy for motion.
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Answer 1

Here are the answers to your questions based on the provided information:

1. How does the potential and kinetic energy of the ball change as the ball rolls down the hill?

   • Response: The potential energy of the ball decreases, and the kinetic energy of the ball increases.

2. What type of energy transfer occurs when a light is connected to a battery?

   • Response: Chemical energy to electrical energy to light energy.

3. When a match is struck, what forms of energy does the burning match give off?

   • Response: Light energy and thermal energy.

4. Which statement best explains why the heat will be spread out evenly through the entire liquid when cold milk is added to hot chocolate?

   • Response: Heat always moves from areas of higher temperature to areas of lower temperature.

5. What is most likely to happen to the temperature of the hot tea when set on the counter?

   • Response: The hot tea will transfer thermal energy into the air, and the energy transfer will continue until the tea is at room temperature.

6. What main energy conversion occurs when a woman runs?

   • Response: Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner’s motion.

Feel free to ask if you need further clarification or assistance!