3.12.SmallGroup

An old-growth forest has many tall trees, but it also has many smaller shrubs and plants that grow much closer to the ground under the tall trees.

Which factor is MOST LIKELY responsible for the growth of these smaller shrubs and plants in the forest?

• Limited access to sunlight

• Limited access to water

• Limited access to nutrients

• Limited access to oxygen

A student watches a toy car speed up as it rolls down a ramp. After the car gets to the bottom of the ramp, the car slows to a stop as it rolls across the classroom floor.

Which force caused the car to speed up when rolling down the ramp, and which force caused it to slow down when rolling across the floor?

• Gravity caused the car to speed up when rolling down the ramp and slow down when rolling across the floor.

• Friction caused the car to speed up when rolling down the ramp and slow down when rolling across the floor.

• Gravity caused the car to speed up when rolling down the ramp, and friction caused the car to slow down when rolling across the floor.

• Friction caused the car to speed up when rolling down the ramp, and gravity caused the car to slow down when rolling across the floor.

A student studies birds that are native to Texas.
The student records information about four of the birds' beaks. A table of the information is shown.

Which bird would be best suited to survive on a shoreline in a coastal environment?

• Bird 1

• Bird 2

• Bird 3

• Bird 4

Which type of landform is caused by ice erosion?

• Delta

• Sand dune

• U-Shaped Valley

• V-Shaped Valley

Which activities require for light to be refracted before reaching the eyes of the student? Select TWO correct answers.

• Students see themselves in a mirror.

• A student views an insect through a hand lens.

• A student looks at a piece of paper.

• A student sees an image on the surface of a puddle.

• Students look at a rainbow after it rains.

Which statement describes the climate of Dallas, Texas?

• The amount of rainfall recorded in the last two days of September was 19.4 centimeters.

• The highest rainfall record of 24.3 centimeters was recorded on September 4 and September 5 in 1932.

• The amount of rainfall this September is four times the normal amount.

• The average rainfall in September over the last 50 years has been 6.5 centimeters.