Science 8 STAAR Practice 9

Oxygen‚ O, and neon, Ne

Fluorine, F, and neon, Ne

Silicon, Si, and phosphorus, P

Beryllium, Be, and boron, B

Rocket 1

Rocket 2

Rocket 3

Rocket 4

Clown fish protect sea anemones from predatory fish.

Clown fish decrease competition among sea anemones.

Clown fish consume the remains of organisms paralyzed by sea anemones.

Clown fish move water near sea anemones when dissolved oxygen levels are low.

Kinetic energy increases. Potential energy decreases.

Kinetic energy increases. Potential energy remains constant.

Kinetic energy remains constant. Potential energy decreases.

Kinetic energy remains constant. Potential energy increases.

Trees with broad leaves will be more healthy than trees with needlelike leaves.

Trees with leaves that have waxy coverings will be more healthy than trees without wax-covered leaves.

Trees with broad leaves will be more healthy than trees with small, flat leaves.

Trees with leaves without any hairlike structures will be more healthy than trees with leaves covered by hairlike structures.

Convergent boundary

Subduction boundary

Transform boundary

Divergent boundary

The force of gravity causes the coin to change its velocity.

The coin’s inertia decreases on the way up and increases on the way down.

The action-reaction force pair of gravity and the applied force cancel each other.

The coin remains in its state of upward motion until the force of friction acts upon it.

asteroids

comets

planets

stars

The vinegar took the shape of the container in step 1.

The steel wool sank into the vinegar in step 3.

The temperature of the vinegar increased during step 4.

The steel wool changed shape during step 6.