RMS 4th Grade - Ch 1 Energy & Heat

What type of energy is formed by vibrating objects?

• light energy
• sound energy
• thermal energy
• electrical energy

What type of energy does moving water have?

• electrical
• kinetic
• thermal
• potential

A guitarist strums two strings of the same thickness on a guitar. The first string vibrates more quickly than the second string. What is true about the pitch of the strings?

• The first string has a higher pitch than the second string.
• The second string has a higher pitch than the first string.
• The first string and the second string have the same pitch.
• The pitch of the second string depends on the pitch of the first string.

Which is the best description of a sound wave when the pitch of the sound is very high?

• It has a low frequency.
• It has no wavelength.
• It has a high frequency.
• It has no frequency.

How do white light waves act when they enter a prism?

• They are absorbed.
• They become raindrops.
• They are reflected.
• They bend or refract.

Which of the following can act like a prism?

• a radio
• a raindrop
• a piece of paper
• a laser

Look carefully at the illustration. How is heat transferred from the campfire DIRECTLY to the people?

• conduction
• insulation
• convection
• radiation

Which of the following shows conduction?

• A fire in the hot air balloon allows it to lift into the sky.

• The sun warms your skin.

• A metal spoon in soup becomes warm.

• The oven heats your house.

Why might ice melt after you have skated on it?

• Radiation
• Conduction
• Friction
• Potential Energy

If you want to stay cool while playing outside on a sunny day, which is better to wear: a black T-shirt or a white T-shirt?

• Black T-Shirt
• White T-Shirt