8th Science STAAR Review

What is a subduction zone?

• A region where two tectonic plates collide and one is forced below the other.

• A place where tectonic plates slide past each other without significant vertical movement.

• An area where tectonic plates are moving apart and new crust is formed.

• A zone where tectonic plates are stationary and do not interact.

Tags

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What is the significance of the water cycle?

• It is the process of water evaporating and falling as rain.

• It is essential for distributing water across the Earth, supporting ecosystems and weather patterns.

• It only affects ocean currents and tides.

• It is primarily responsible for the formation of clouds.

Tags

NGSS.MS-ESS2-1

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What is the unit for acceleration?

• meters per second (m/s)

• meters per second squared (m/s²)

• kilometers per hour (km/h)

• feet per second (ft/s)

What is the pH scale used for?

• To measure the temperature of a solution.

• To measure the acidity or alkalinity of a solution.

• To determine the density of a liquid.

• To assess the color of a solution.

What is the difference between speed and velocity?

• Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

• Speed and velocity are the same; both refer to how fast an object is moving.

• Velocity is a scalar quantity that refers to how fast an object is moving, while speed is a vector quantity that includes both speed and direction.

• Speed is a vector quantity that includes both speed and direction, while velocity is a scalar quantity that refers to how fast an object is moving.

What is the formula for calculating force?

• Force (F) = mass (m) + acceleration (a)

• Force (F) = mass (m) × acceleration (a) or F = ma

• Force (F) = mass (m) / acceleration (a)

• Force (F) = acceleration (a) / mass (m)

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What is the unit used to measure force?

• Joule (J)

• Newton (N)

• Pascal (Pa)

• Watt (W)

What is the law of conservation of energy?

• Energy can be created and destroyed.

• Energy can only be created, not destroyed.

• Energy cannot be created or destroyed, only transformed from one form to another.

• Energy can be transformed into matter.

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What is the difference between an element and a compound?

• An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

• An element can be broken down into simpler substances, while a compound cannot.

• A compound is a pure substance made of only one type of atom, while an element is made of two or more different types of atoms.

• Elements and compounds are the same; both consist of multiple types of atoms.

What is an example of a physical change?

• Melting ice is an example of a physical change.

• Burning wood is an example of a physical change.

• Rusting iron is an example of a physical change.

• Mixing sand and salt is an example of a physical change.

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