Which statements represent convection? check all that apply

black asphalt gets very hot on a sunny day

the movement of air in a hot air balloon makes it rise into the sky

adark sand beach can burn the soles of your feet

a spoon gets warm from sitting in a soup pot

a house has high heating bills because the heat ends up in the attic

a house loses heat through an exterior wall.

Explanation:

Thermal convection is the process of heat transmission in which thermal energy propagates through the transport of matter, due to a density difference and the action of gravity. In this sense the warmer matter becomes less dense and tends to rise, while the cold matter tends to go down. Two examples of this are:

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

i'm guessing this is from edg enuity so the answers would be, from top to bottom,

theodor schwann

matthias schleiden

robert hooke

rudolph virchow

anton van leeuwenhoek