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STAR Prep > Science > Flashcards

Science Flashcards

1
Q

An athlete can run 9 kilometers in 1 hour.

If the athlete runs at that same average speed for 30 minutes, how far will the athlete travel?

A

4.5 kilometers

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2
Q

What characteristics of motion can change without changing velocity of an object?

A

the position

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2
Q

What characteristics of motion can change without changing velocity of an object?

A

the position

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3
Q

A ball is dropped from the top of a tall building. As the ball falls, the upward force of air resistance becomes equal to the downward pull of gravity. When these two forces become equal in magnitude, the ball will

A

fall at a constant speed.

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3
Q

A ball is dropped from the top of a tall building. As the ball falls, the upward force of air resistance becomes equal to the downward pull of gravity. When these two forces become equal in magnitude, the ball will

A

fall at a constant speed.

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4
Q

What is found farthest from the center of an atom?

A

electron

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4
Q

What is found farthest from the center of an atom?

A

electron

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5
Q

When magnesium (Mg) metal is burned in the presence of oxygen (O2 ), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different than the individual properties of magnesium and oxygen because magnesium oxide is

A

a compound.

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5
Q

When magnesium (Mg) metal is burned in the presence of oxygen (O2 ), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different than the individual properties of magnesium and oxygen because magnesium oxide is

A

a compound.

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6
Q

Within a substance, Atoms that’s collide frequently and move independently of one another or most likely in a?

A

gas.

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6
Q

Within a substance, Atoms that’s collide frequently and move independently of one another or most likely in a?

A

gas.

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7
Q

Iron oxides, such as rust, form when iron metal reacts with oxygen in the air. What are the chemical symbols for the two elements found in iron oxide?

A

Fe and O

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7
Q

Iron oxides, such as rust, form when iron metal reacts with oxygen in the air. What are the chemical symbols for the two elements found in iron oxide?

A

Fe and O

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8
Q

What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common?

A

They are nonmetals.

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8
Q

What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common?

A

They are nonmetals.

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9
Q

What class of elements best conducts electricity?

A

Metals

9
Q

What class of elements best conducts electricity?

A

Metals

10
Q

A student divides several cubes into two groups, based on whether or not each cube can float in water. What property is the student using to classify the cubes?

A

density

10
Q

A student divides several cubes into two groups, based on whether or not each cube can float in water. What property is the student using to classify the cubes?

A

density

11
Q

A galaxy is best described as a cluster of

A

billions of stars.

11
Q

A galaxy is best described as a cluster of

A

billions of stars.

12
Q

To express the distance between the Milky Way galaxy and other galaxies, the most appropriate unit of measurement is the

A

Light year

12
Q

To express the distance between the Milky Way galaxy and other galaxies, the most appropriate unit of measurement is the

A

Light year

13
Q

An object composed mainly of ice is orbiting the Sun in an elliptical path. This object is most likely

A

a comet.

13
Q

An object composed mainly of ice is orbiting the Sun in an elliptical path. This object is most likely

A

a comet.

14
Q

Which of the following forms of energy is released or absorbed in most chemical reactions?

A

heat energy

14
Q

Which of the following forms of energy is released or absorbed in most chemical reactions?

A

heat energy

15
Q

As a sample of water turns to ice,

A

the arrangement of the molecules changes.

15
Q

As a sample of water turns to ice,

A

the arrangement of the molecules changes.

16
Q

What characteristic of carbon (C) makes it essential to living organisms?

A

Carbon bonds in many ways with itself to

form chains.

16
Q

What characteristic of carbon (C) makes it essential to living organisms?

A

Carbon bonds in many ways with itself to

form chains.

STAR Prep (2 decks)

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