ch. 7/8
Acid
Is the ability to make something move
Mechanical energy
The Brightness of a star is called _____
magnitude
Which planet is closest to the sun?
Mercury
The part of the stamen that produces pollen is called the _____
Anther
A substance that changes color when exposed to acid or base the solution is called a(n)
Indicator
A fixed unmoving object or location is ______
a reference point
When an existing star flares up and becomes brighter than normal, it is called a _______.
nova
The surface of the sun
photosphere
The sticky tip of the pistil that traps pollen is called the ______
Stigma
Static electricity occurs when a circuit and a power source allows electrons to move.
false
The ___ of an object is determined by its mass and velocity.
momentum
Two or three stars are held together by gravity.
multiple star group
The sun’s atmosphere
chromosphere
Plants that have flowers and produce seeds enclosed in fruit are called____
Angiosperm
A very small circuit with all the parts built into it
integrated circuit
_____ occurs whenever an object speeds up, slows down, or changes Direction.
Acceleration
Made of irregularly shaped pieces of rock, metal and dust
Asteroid
Which planet has the most violent weather?
Neptune
_____ is a type of mammal that develops fully inside the mother’s body
A placental mammal
The compound H2CO3 has ____ atom(s) of carbon in it.
One
The resistance to a change in motion is called _____.
Inertia
A neutron star that spins rapidly on its axis is called a _____
Pulsar
What keeps the planets in orbit around the sun?
the sun’s mass
The period of time during which a mammal develops inside its mother’s body is called ________
Gestation