Earth Science Forces Worksheet

Forces Short Answer

Grade 9 Earth Science Forces Short Answer Very Easy 30 Questions 12 Views

Classroom Worksheet

Earth Science Forces Worksheet

Forces Short Answer

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Grade: Grade 9

Subject: Earth Science

Topic: Forces

Time: 20 Minutes

Difficulty: Very Easy

Questions: 30

Instructions:
Answer each question in a short sentence or phrase. Begin with the easiest questions and work carefully through the worksheet. Use what you know about forces in Earth Science.

Skills Practiced:

Forces
Earth Science
Critical Thinking
Problem Solving

1Question

What is a force?

2Question

Name one way a force can change an object's motion.

3Question

What force pulls objects toward Earth?

4Question

Is gravity a contact force or a non-contact force?

5Question

What is friction?

6Question

What is one effect of friction?

7Question

What force do you use when you push a door open?

8Question

What force do you use when you pull a drawer open?

9Question

What is the force of air pushing on an object called?

10Question

What does balanced force mean?

11Question

What does unbalanced force mean?

12Question

If two equal forces act in opposite directions, what happens?

13Question

What is the name for the force caused by Earth’s gravity on an object?

14Question

Which has more weight on Earth: a 1 kg rock or a 1 kg feather?

15Question

What force makes a ball fall to the ground after you throw it up?

16Question

What is the center of gravity?

17Question

Why do objects on a slope tend to move downhill?

18Question

What is the force called when two surfaces rub against each other?

19Question

Why does a rough surface create more friction than a smooth surface?

20Question

What is the name of the force that opposes the motion of an object moving through water?

21Question

What happens to motion when the forces on an object are balanced?

22Question

What can a force do besides changing motion?

23Question

What force helps keep you from slipping while walking?

24Question

Why do soccer shoes often have cleats?

25Question

What is net force?

26Question

If one force pulls right with 5 N and another pulls left with 5 N, what is the net force?

27Question

What happens when the net force on an object is greater than zero?

28Question

What unit is force measured in?

29Question

How does gravity affect ocean tides?

30Question

Why is understanding forces important in Earth Science?

Answer Key

#	Answer
1	A push or a pull.
2	It can make an object move, stop, or change direction.
3	Gravity.
4	A non-contact force.
5	A force that opposes motion between two surfaces.
6	It slows moving objects down.
7	A push force.
8	A pull force.
9	Air resistance.
10	The forces are equal and do not change motion.
11	The forces are not equal and cause motion to change.
12	They balance each other.
13	Weight.
14	They have the same weight if both have the same mass.
15	Gravity.
16	The point where an object’s weight is balanced.
17	Gravity pulls them downward.
18	Friction.
19	The surfaces catch on each other more.
20	Water resistance.
21	It stays at rest or keeps moving at the same speed in a straight line.
22	It can change an object’s shape.
23	Friction.
24	To increase friction and help with grip.
25	The total force acting on an object.
26	0 N.
27	The object accelerates.
28	Newtons (N).
29	The Moon’s and Sun’s gravity cause tides.
30	Forces help explain motion, gravity, friction, tides, and changes on Earth.