STAAR

same density as water

less dense than water

more dense than water

Magnetism

Friction

Gravity

Air pressure

F Energy is transferred from hawks to shrews to grasshoppers to marsh grasses.

G Energy is transferred from marsh grasses to crickets to hawks to frogs.

H Energy is transferred from grasshoppers to crickets to frogs to hawks.

J Energy is transferred from cattails to crickets to shrews to hawks.

A Conduct five trials, using a different scale to pull each block of wood

B Conduct five trials, pulling a different side of each block each time

C Conduct five trials, using a different table for each trial

D Conduct five trials, pulling each block of wood in the same way for each trial

F travels in straight lines and reflects from the surface of the mirror

G refracts in the glass of the mirror and is spread out all over the room

H enters the mirror and changes direction when it is refracted by the back of the mirror

J travels through air and does not change its direction in air

They were eaten by scavengers.

G They became fossil fuels.

H They were washed away by water

J They became an underground aquifer.