Science

The Hertzsprung Russell diagram is labeled with specific stars.

Based on the diagram, which of the following is a true statement?

• Betelgeuse, Antares, and Aldebaran are white dwarfs.

• The Sun is hotter and brighter than Spica.

• Regulus, Sirius A, and Procyon are all on the main sequence

• Sirius B is a red giant.

The data chart indicates how carts of different mass accelerate when a constant force is applied. Using the data, determine the amount of force used in Newtons.

• 1N

• 2N

• 4N

• 8N

Which among the following organisms can move easily on knife blades?

• Monkeys

• Snails

• Earthworms

• Snakes

What is the primary function of the body system shown?

• The protection of vital organs from injury

• The chemical breakdown of food into smaller pieces

• The transport of nutrients, water, and oxygen to body cells

• The production of hormones that regulate growth and metabolism

A family was vacationing in the mountains in a cabin that had no electrical power. They needed boiling water in order to prepare dried soup mix. With no electrical energy available, which method would most likely provide enough thermal energy to quickly heat the water to boiling?

• Using a microwave oven to heat water in a glass jar for 3 minutes

• Shining a battery-powered flashlight on a metal container of water for 10 minutes

• Placing a metal pot of water over glowing charcoal in an outdoor grill for 10 minutes

• Shaking the water in a closed, insulated plastic bottle for 3 minutes

Which statement best describes the processes of weathering and erosion?

• Weathering and erosion are directly responsible for depositing loose sediments on the bottom of the ocean, forming layers of sediment.

• Weathering and erosion are directly responsible for the breakdown of any type of rock into smaller particles and the carrying away of the loose sediments.

• Weathering and erosion are directly responsible for the amount of water in a river that transports sediments to the sea.

• Weathering and erosion are directly responsible for the transportation, deposition, and compaction of loose sediments on the seafloor.

Students slid a small wood block along a flat tabletop for a distance of 1.6m. The data show the motion of the block of wood.

Which graph displays the motion of the wood block?

• 
• 
• 
• 

The knee joint is an example of-

• Hinge

• Ball and socket

• Pivotal

• Gliding

A family takes a group picture in a park where bluebonnets are blooming. The family notices that some of the blooms are white and others are blue. The color of the blooms is most likely determined by —

• inheritance from parent plants

• the age of the plant

• the types of consumers that eat the plant

• air temperature

Which of these describes one or more living organisms that depend on another living organism to survive?

• Bacteria living in the mouth of a horse

• Ivy plants growing up a fence to obtain more sunlight

• Mold living on a hard, rocky surface

• An angelfish releasing carbon dioxide into pond water