Science Quiz on Elements and Compounds

Lauren saw a cell when using her microscope. She drew what she saw. Lauren is classifying this cell as a prokaryotic cell. What evidence is there to support her claim?

• This cell has a nucleus.

• This is an animal cell.

• This cell does not have a nucleus.

• This is a plant cell.

Which example best shows how thermal energy transfers?

• A person sitting under a fan feels cooler than a person sitting far away from the fan.

• A refrigerator stays cool until it loses electrical power, at which point the refrigerator will heat up.

• A radiator pumps heat into a cold room and the radiator eventually shuts off once the entire room has reached a certain temperature.

• An ice cube is sprinkled with salt which causes the ice cube to melt.

Astronomers track asteroids as they move throughout our solar system. The path of an asteroid is illustrated below. What force is most responsible for the path this asteroid follows?

• gravitational pull from the center of the Milky Way galaxy

• Newton’s 1st law of motion that says objects want to travel in a straight line

• centripetal force that governs objects will move in circular patterns

• the gravitational pull from the sun

The food web below displays the flow of energy in an ecosystem. If a disease suddenly reduced the number of flying squirrels and wrens in the ecosystem, which organism would see a decrease in its population? Choose ALL of the organisms by clicking the appropriate boxes.

• Cougar

• Deer

• Owl

• Beaver

• Vole

Based on the information and data provided in the graph, what biome is the graph most likely a representation of?

• wetlands

• tropical rainforest

• deciduous forest

• congo

Based on the dichotomous key, what order does this insect belong to?

• Lepidoptera

• Diptera

• Odonata

• Hemiptera

In science class, five students are given adaptation descriptions of the polar bear. They are asked to identify them as external or internal adaptations. The descriptions are in the table. Select TWO students from column 1 who most likely have an internal adaptation description by clicking the appropriate boxes.

• Polar bears have two layers of fur that prevent almost all heat loss.

• Polar bears have thick layer of fat that helps keep the bear warm.

• Polar bears have huge paws that act like paddles helping them swim.

• Polar bears have thick, sharp, curved claws that help them catch and hold slippery prey.

• Female polar bears' milk is high in fat and protein allowing cubs to increase body weight quickly.

The anatomy of a bird bone (the left side) in comparison to a human bone (the right side) is shown in the image. What is the most likely reason for the difference in the two bones?

• A human bone is thicker than a bird bone, allowing for more blood storage.

• A bird bone is more hollow than a human bone, giving the bird less mass and enabling the bird to fly.

• A human bone is less dense than a bird bone, allowing better support for the higher mass of a human.

• A bird bone is more dense than a human bone, making it ideal for the upright position of the bird.

Adaptations help an organism survive and reproduce in its environment. Adaptations such as feathers are known as structural. Adaptations such as migration are known as behavioral. What type of adaptations are the bird and human bones shown in the image?

• Physiological Adaptation

• Behavioral Adaptation

• Structural Adaptation

• Environmental Adaptation

Which of the following are responses in organisms that result from internal stimuli? Choose the correct responses by clicking the appropriate boxes. There will be more than one answer.

• Wilting in plants

• Phototropism

• Migration of birds

• Vomiting in animals

• Fight or flight