Grade 6 PMA 3 review Part 1

The jet stream guides this type of air into North Carolina:

• Cold air comes to North Carolina because of the Jet Stream.

• Warm air comes to North Carolina because of the Jet Stream.

• Hot air comes to North Carolina because of the Jet Stream.

• No air comes to North Carolina because of the Jet Stream.

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The Jet Stream helps weather systems come to Florida by

• forcing winds to blow in the opposite direction.

• decreasing inland wind speed.

• moving air masses west to east across the United States.

• keeping temperatures consistently warm all year round

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How does the jet stream affect the weather?

• The jet stream transports weather systems that affect us.
• The jet stream does not affect the weather.
• The jet stream releases oxygen so we can breathe.
• The jet stream brings only bad weather.

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Which best describes a characteristic of the jet stream?

• It is a band of high speed winds high in the atmosphere that forms a boundary between a cold air mass and a warm air mass.

• It creates the high winds around the eye of a hurricane.

• It forces the hot air along the equator to rise to areas in North

  America.

• It causes high pressure air masses to rotate clockwise.

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When an unbalanced force acts on an object, how would you describe the object's motion?

• it will stay at rest

• it can change direction and/or speed

• it stays at a constant speed

• cancels out other forces

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An example of a balanced force is...

• kicking a football so it moves from one place to another

• climate change

• A game of tug of war with equally matched opponents, rope does not move

• meteor showers

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An example of a unbalanced force is...

• kicking a football so it moves from one place to another

• climate change

• A game of tug of war with equally matched opponents is an example of balanced force.

• meteor showers

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What does this graph represent?

• Constant speed
• Acceleration
• Not moving or stationary

What does this graph represent?

• Constant Speed
• Acceleration
• Not moving

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During which interval is the object speeding up the greatest?

• A to B

• B to C

• D to E

• C to D

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