A student performs an experiment in which a cart is pulled across a table by exerting a net force of 0.05 N on the cart.  Different amounts of mass are added to the cart for each trial.  The graph shows data from the experiment.

Based on the results from the experiment, what claim can the student make about the relationship between net force, acceleration, and mass?

• Objects with smaller mass experience a larger acceleration and therefore a larger net force.

• Objects with larger mass experience a smaller acceleration and therefore a smaller net force.

• Objects with larger mass experience a smaller acceleration when the net force is the same.

• Objects with smaller mass experience a smaller acceleration when the net force is the same.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Students are investigating the relationship between human population density and biodiversity. The amount of forest cover was used as a measure of the biodiversity of an area. The students averaged human population density and forest cover from locations with a range of population densities. The graph shows the students' results. Which answer choice below completes the following sentence. "Based on the graph, if the population density increases from 1 to 500 people/km², the forest cover will likely __________in that area."

• decrease by about 50%

• decrease by about 500 km

• double in size

• stay the same

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

What is the chemical formula for water?

Tags

NGSS.MS-PS1-1

Which planet is known as the Red Planet?

• Earth

• Mars

• Jupiter

• Venus

What is the process by which plants make their food using sunlight?

• Photosynthesis

• Respiration

• Transpiration

• Digestion

Tags

NGSS.MS-LS1-6

What is the force that pulls objects toward the center of the Earth?

• Magnetism

• Friction

• Gravity

• Electricity

Tags

NGSS.5-PS2-1

Which gas is most abundant in the Earth's atmosphere?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Hydrogen

What is the basic unit of life?

• Cell

• Atom

• Molecule

• Organ

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What is the boiling point of water at sea level?

• 100°C

• 0°C

• 50°C

• 200°C

Which organ in the human body is primarily responsible for pumping blood?

• Lungs

• Brain

• Heart

• Liver