The diagram below shows a view of a ball from above a table. The ball is rolling across the table. A student lightly taps the rolling ball in the direction shown below.

In which direction does the ball most likely move after the student taps the ball?

Fox squirrels live in the trees of city parks throughout Texas. Each spring they build nests of twigs and leaves in the tops of the trees. Fox squirrels are often found near park benches, waiting to be fed by visitors.

For fox squirrels, which of these is a learned behavior?

The diagram below shows the sequence of the processes that turn solid rock into sandstone.

Which two processes best complete this diagram?

Three different objects that use the same source of energy are shown below.

What is the energy source for these objects?

A scientist observes sea otters using rocks to break open clamshells.

Which of these investigations would best help the scientist determine whether this skill is a learned or an inherited behavior?

A diagram of the stages in the water cycle is shown below.

Which of these observations would most likely be seen at Stage N?

Scientists use telescopes to make distant objects appear closer. Some parts of a telescope are shown below.

Which of the following best describes how the objective lens of this telescope helps a scientist observe the moon?

The picture below shows a type of plant called kudzu. Kudzu is a fast-growing Asian vine that was introduced into the United States. Kudzu quickly uses available resources and can completely cover the plants in an area.

What effect does the rapid growth of kudzu most likely have on an ecosystem?

Crayfish live in water and often hide under rocks or plants. They come out to look for food and will eat both plants and animals.

Which of these is a trait that a crayfish most likely inherits from its parents?

A worker built a sidewalk and pressed some large salt particles into the concrete while it was still wet. When the concrete was dry, the worker washed the sidewalk with water. The picture below shows the sidewalk after it was washed.

What most likely happened to the salt?

A string of lights with small bulbs is shown below. The bulbs are connected by wire that is covered with an insulator.

When the lights are on, electricity travels in —