Acap Practice Physical Science

An atom of an element can be modeled in several ways. The diagram below shows one model of an atom. What can be located in the nucleus?

• protons and neutrons

• protons and electrons

• electrons and neutrons

• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

Light waves can be reflected, refracted and absorbed. Which of the following is an example of light waves being absorbed?

• A ray of light travels from the Sun to Earth's atmosphere.

• A mirror changes the direction of a light ray.

• A magnifying lens increases the image size of a penny.

• A road's black pavement becomes hot in the sunlight.

Tags

NGSS.MS-PS4-2

Scientists use rovers to study Mars. The rovers are able to move and collect information from different locations on the planet. The following image shows a Mars rover. One Mars rover is named Curiosity. Curiosity had a mass of about 900 kg and a weight of about 8,800 newtons when it was on Earth. If Earth has a stronger gravitational pull than Mars, what is true about the mass and weight of Curiosity now that it is on Mars?

• Its mass is the same, but its weight is different than it was on Earth.

• Its mass and weight are both different than they were on Earth.

• Its weight is the same, but its mass is different than it was on Earth.

• Its mass and weight are both the same as they were on Earth.

Tags

NGSS.MS-PS2-4

A scientist wants to break down a newly discovered element. She wants to break it down to the smallest particle that retains the element's chemical properties. What particle would the scientist end with after this process?

• a proton

• a molecule

• an atom

• an electron

Two satellites are orbiting Earth. Both satellites have a mass of 1500 kg. Satellite X is traveling at a speed of 3,000 m/s and maintains an orbit 35,000 km from Earth. Satellite Y is traveling at a speed of 3,500 m/s and maintains an orbit of 25,000 km from Earth.

Which statement best describes the satellites?

• The two satellites are experiencing the same gravitational force.

• The two satellites are too far away from Earth to experience a gravitational force.

• Satellite X is experiencing a greater gravitational force than satellite Y.

• Satellite Y is experiencing a greater gravitational force than satellite X.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Lupe and Steve each obtained a container. They then added and mixed different materials in their own container. The table below shows what they added and observed after mixing. Based on the information given, which statement best describes what Lupe and Steve made?

• Both of them made a pure substance.

• They both made a mixture, but only Lupe made a solution.

• They both made a mixture, but only Steve made a solution.

• They both made a solution, but only Steve made a mixture.

A student collects information on two different liquids. The table below compares each of the liquids.

Based on the information given, which statement best describes liquids X and Y?

• Liquid X is a base, and liquid Y is an acid.

• Liquid X is an acid, and liquid Y is a base.

• Both liquids are acids.

• Both liquids are bases.

Tags

NGSS.MS-PS1-2

Which contact force always acts against the direction of movement?

• friction

• impact

• spring

• normal

Which event is an example of a contact force?

• a person pulling a sled

• a nail being attracted to a magnet

• a leaf falling from a tree

• an electric charge jumping from a sweater to a person

Janine hits a hockey puck across an ice rink. The distance between the puck and Janine for the first ten seconds after she hits it is graphed below. Judging from the graph, which of the following statements is true?

• The hockey puck's speed increased as it moved away from Janine.

• The hockey puck's speed decreased as it moved away from Janine.

• The hockey puck moved at a constant speed away from Janine.

• The hokey puck moved at a constant speed toward Janine.

Tags

NGSS.MS-PS3-1