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We use position, direction, and speed to describe _____________.
Motion
What can we measure with a speedometer?
Speed
What is on the x-axis (horizontal) of a distance-time graph?
Time
What is on the y-axis (vertical) of a distance-time graph?
Distance
Motion depends on
surface, mass, shape, & force
Force is measured in ___________.
Newtons
Force is measured with a ___________ balance.
Spring
Name 2 contact forces
Frictional and muscular
Name 3 non-contact forces
Gravitational, magnetic, and electric
Does frictional force speed up or slow down an object?
Slow down
Give 2 examples of how we use muscular force.
Running, talking, cleaning, dancing, . . .
What has a stronger gravitational force, the Earth or the moon?
The Earth
What has a stronger gravitational force, the Earth or the sun?
The sun
What creates the tides in the ocean?
The moon's gravitational force
What makes an apple fall off a tree?
The Earth's gravitational force
What makes the Earth orbit the sun?
The sun's gravitational force
