STAAR SCIENCE 8TH REVIEW

Front

Classify an unidentified, solid gray material as a metal or a nonmetal. Which question will best help? Options: Is the material malleable or ductile? Does the material feel hard to the touch? Will the material float in water? Does the material feel rough or smooth?

Back

Is the material malleable or ductile?

Front

Back

C7H14O

Front

Which statement best describes evidence that a chemical reaction occurs as a cake bakes?

Back

The cake rises as gas bubbles form in the baking cake.

Front

Back

both move backward, but the daughter moves with a greater acceleration

Front

A large rock is motionless on a flat sidewalk. Why does the rock remain motionless?

Back

the forces acting on the rock are all balanced

Front

A pitcher throws a ball toward a player holding a softball bat. The player uses the bat to hit the ball. The bat applies a 10 newton force to the ball. Which statement correctly describes the reaction force between the bat and the ball?

Back

the reaction force is the force of the ball on the bat

Front

What is the object doing? Options: moving at a constant speed, accelerating, moving toward the north, stopped.

Back

moving at a constant speed

Front

Back

Diagram 4

Front

What is the force that keeps Earth in orbit around the sun?

Back

the gravitational attraction between the sun and the Earth

Front

Why will the proposed law not protect the lake?

Back

The proposed law will not protect the lake because groundwater will carry pollution from the wetland directly into the lake.