Science SLT Post Test

A rock that weighed exactly 5 pounds was placed on the ground behind a school. No person or animal touched the rock for 5 years. The rock was weighed after this period of time, and it weighed less than 5 pounds. What most likely caused this change in the rock's weight?

• The rock absorbed nutrients from the ground.

• Parts of the rock were worn away by rain and wind.

• Parts of the rock were pulled into the ground by gravity.

• The rock absorbed energy from the Sun.

A plant's _______ hold the plant in place and take in water from the soil.

• leaves

• flowers

• roots

• stems

Where do coal and oil come from?

• resources created in power plants and processing plants

• resources that are formed through wind and solar power

• natural resources that are developed by humans

• natural resources that come from the Earth

The image below shows a map of volcanoes located in or near the Pacific Ocean. The more red area in a region, the more volcanoes there are. The volcanoes in the red regions form the "Pacific Ring of Fire." Which of the following conclusions can be drawn from the map?

• A. Most of the volcanoes occur along the boundaries between continents and the Pacific Ocean.

• B. Most of the volcanoes occur randomly and do not follow a pattern.

• C. Most of the volcanoes occur in the center of the continents.

• D. Most of the volcanoes occur in the center of the Pacific Ocean.

A dam is constructed on a river to provide continuous electricity supply to a nearby factory. What is one disadvantage of constructing dams?

• The supply of electricity will decrease.

• More fossil fuels will be used for making electricity.

• Less rainfall will be received in the area.

• Some ecosystems will be destroyed.

A dog sees a cat and gets close to it. The dog is scratched by the cat, and the dog runs away in pain. One day later, the dog sees the cat again. Which of the following will most likely happen based on the dog's memory?

• It will follow the cat.

• It will attack the cat.

• It will avoid the cat.

• It will fall asleep close to the cat.

If Steve wants to make fewer waves on the same piece of rope, what should he do?

• A. He should move the rope up and down more slowly.

• B. He should move the rope up and down with more force.

• C. He should move the rope up and down more quickly.

• D. He should move the rope up and down with less force.

Darren and Meredith are having a snowball fight. They both throw a snowball at the same time, but Meredith's snowball travels faster and farther than Darren's snowball. Both snowballs have the same mass. Which of the following is true about the snowballs as they fly through the air?

• Darren's snowball has more energy of motion than Meredith's snowball.

• Neither snowball has any energy.

• Meredith's snowball has more energy of motion than Darren's snowball.

• Both snowballs have the same energy of motion.

As kudzu vines spread in an area, what could be expected to happen?

• an increase in the varieties of mammals and insects

• an increase in the number and varieties of trees

• a decrease in the amount of land covered by plants and trees.

• a decrease in the amount of sunlight reaching other plants.

Which student climbs the steepest slope to get to the top of the hill?

• A. Marisol

• B. Lin

• C. Barry

• D. Tanisha