What is energy?

What is energy?

• The ability to make things happen, move, make sounds, give light, and create heat

• Something that only exists in the sun

• A type of food

• A kind of water

Fill in the blank: Energy is like a special ______ that objects have when they move, make noise, shine, or get hot.

• power

• color

• shape

• taste

Fill in the blank: When the temperature of a substance increases, the substance's particles have more ______ energy, move faster, and move apart, causing the substance to expand in volume.

• kinetic

• potential

• thermal

• chemical

Based on the diagram, what happens to the volume of the liquid as the temperature increases from 70° to 180°?

• The volume decreases

• The volume stays the same

• The volume increases

• The liquid freezes

Thermal expansion occurs because as the temperature of a substance increases, the space between its particles ________.

• decreases

• stays the same

• increases

• disappears

According to the passage, when heating a metal pot and water equally, which one heats up faster?

• The metal pot

• The water

• Both heat up at the same rate

• Neither heats up

In simple terms, what does specific heat measure?

• How cold a material can get

• How difficult it is to heat a material

• The color of a material

• The weight of a material

Fill in the blank: Energy transfer is always from the object with the _______ temperature to the object with the lower temperature.

• higher

• lower

• same

• average

What is conduction? Fill in the blank: Conduction occurs with ________. Heat moves from a hot object to a cooler one, like a metal spoon warming in hot soup.

• direct contact

• radiation

• insulation

• magnetism

What is convection? Fill in the blank: Convection involves ________ movement. Heat circulates in liquids or gases, such as water heating on a stove, where hot water rises and cooler water sinks.

• fluid

• solid

• static

• magnetic