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Worksheets18-19: 8th Grade Homework Week 10
Total questions: 15
Worksheet time: 4hrs 45mins
Name
Class
Date
1.
Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more mass.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
2.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
3.
Kinetic energy increases as an object moves _________.
a)
slower
b)
faster
c)
at the same speed
d)
through an object
4.
Why does the area around the equator stay the same temperature all year?
a)
The equator rotates slower than the poles
b)
The equator remains the same distance from the sun.
c)
The equator always receives direct sunlight.
d)
The equator has 18 hour days.
5.
What is Earth's annual motion around the sun called?
a)
Rotation
b)
Revolution
6.
Which movement of Earth causes day and night?
a)
rotation
b)
revolution
7.
How long does Earth take to make a complete rotation?
a)
365 days
b)
24 hours
8.
The path that Earth takes around the sun is called its
a)
Rotation
b)
Revolution
c)
Axis
d)
Orbit
9.
When is there equal daylight and darkness?
a)
Radiation
b)
Seasons
c)
Solstice
d)
Equinox
10.
What does the solid line on this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
d)
deceleration
11.
What does the solid line on this graph represent?
a)
Constant speed
b)
Acceleration
c)
At rest
d)
deceleration
12.
What is this line of this graph showing?
a)
moving away from starting point at a constant speed
b)
moving back towards the starting point at a constant speed
c)
acceleration (getting faster)
d)
deceleration (getting slower)
13.
1. Which of the following statements about speed and velocity is correct?
a)
Velocity only describes an object’s rate of motion.
b)
Speed describes how an object is changing its velocity.
c)
Speed and velocity both describe how an object is speeding up.
d)
Only velocity includes the direction an object is traveling.
14.
In which time interval was the speed of the object decreasing?
a)
between 0 s and 2 s
b)
between 2 s and 4 s
c)
between 6 s and 8 s
d)
between 8 s and 10 s
15.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
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