Worksheetsyear 7 End of Semester- Earth and space/physics
Total questions: 114
Worksheet time: 2hrs 2mins
Find the Dependent Variable: You experiment to see if a bouncy ball or a tennis ball bounces higher.
Type of ball
Same drop height
Height of bounce
Same surface
Find the Independent Variable: You experiment to see if a bouncy ball or a tennis ball bounces higher.
Type of ball
Same drop height
Height of Bounce
Same surface
Find a Controlled Variable: You experiment to see if a bouncy ball or a tennis ball bounces higher.
Type of ball
Same drop height
Height of Bounce
Find the Dependent Variable: You experiment to discover if your pulse rate is affected by caffeine
Pulse rate
Temperature of room
Amount of caffeine
Amount of exercise
Find a Constant Variable: You experiment to discover if your pulse rate is affected by caffeine
Pulse rate
Amount of exercise
Amount of caffeine
Find the Dependent Variable: You experiment to see if the type of liquid changes how fast it can drain out of the tornado tube
Amount of liquid
Type of liquid
Technique of swirl
Speed to drain
Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours. What is the independent variable?
mosquito bites
repellant
2 hours
One grape is placed in tap water and another grape is placed in salt water. The change in their mass is measured after a day. What is the dependent variable?
salt water
mass of grapes
type of water
type of grapes
A factor or condition that is kept the same is called the
control variable
dependent variable
independent variable
What a hypothesis?
an explanation about what you observed
using your 5 senses to gather data
the thing changed on purpose in the experiment
an educated guess about what will happen in the experiment.
When writing you hypothesis, what information follows IF?
how the measurement of the dependent variable will be affected
how you know it will happen
what change will be made to the independent variable
the words: "I think that"
When writing a hypothesis, what information do you fill in after THEN?
how the measurement of the dependent variable will be affected
how the independent variable will be changed
how you know it will happen
All variables in an experiment must be changed.
True
False
A ____ variable remains constant, or does not change.
Controlled
Independent
Dependent
The ____ variable is what is observed during the experiment.
Independent
Dependent
Controlled
A contact force is from
objects physically touching
far apart objects
not touching object
always a pull
A non-contact force is between
two objects that aren't touching
two objects that are touching
the ground and wheels
you and me
The three examples pictured are of
Non-contact Forces
Contact Forces
The force between the phone and the mount is a
contact force
non-contact force
The force between the two people through the rope is
Contact Pull
Non-contact Pull
Contact Push
Non-contact Push
Gravity is a
Contact Force
Myth
Non-contact Force
Magnetic Force is an example of ____________ force.
contact
non-contact
balanced
unbalanced
______________ is a force that always acts in the direction opposite of motion.
applied
friction
gravity
normal
You are pulled to the surface of the earth due to the force of _________________
gravity
friction
normal force
contact force
A contact force is from
touching objects
far apart objects
not touching object
always a pull
Frictional Force
Contact Force
Non-Contact Force
A non-contact force is between
two objects that aren't touching
two objects that are touching
the ground and wheels
you and me
Any push or pull is called...
gravity.
magnetism.
a force.
acceleration.
You push a cart with lots of books. Then you remove half the books. If you push with the same force, what happens?
cart moves slower
cart moves faster
cart moves at the same speed
you can no longer move the cart
When two different objects are dropped, what happens?
both objects will bounce upon impact
both objects hover in the air
gravity pulls both objects to the Earth's center
gravity pushes the objects
When you throw something in the air, what happens?
friction brings it back down
gravity bring it back down
it loses mass and falls
it gains mass and falls
You need to quickly push your broke-down car out of the road. What should you do to move the car faster?
apply less force
increase the mass of the car
apply more force to the car
increase the friction between the car and road
How many Laws of Motion did Isaac Newton Create?
2
4
5
3
In Newton's first Law of Motion, an object at rest will ___________.
defy gravity
want to move
remain at rest
Go to the Moon!
According to Newton's first Law of Motion, an object in motion will _________.
Stay in motion
want to stop right away
spontaneously combust
Go to the Moon!
Mass of an object can be defined by...
how small an object is
how large an object is
how far an object is from the sun
How much matter an object is made out of.
The greater the mass of an object, the greater the amount of ______ is needed to make it accelerate.
Force
Matter
Acceleration
Velocity
In the equation f=ma, what does the "m" stand for
acceleration
matter
mass
force
In the equation f=ma, what unit of measure is used for force?
Kilogram
Newton
Feet per second
Meters per second
According to Newtons Third Law of Motion, every action has an equal and opposite _________.
gravity
force
mass
reaction
In the equation f=ma, "F" stands for _______.
force
mass
velocity
acceleration
Select the term that BEST matches the definition below.
Definition: Energy that causes movement.
Force
Gravity
Momentum
Newton's Third Law of Motion
To calculate net force you must
Add the forces
Subtract the forces
In a tug of war game, the NET FORCE is 50N to the LEFT. The winning team pulled with a force of 200N to the left. How much force did the losing team pull with?
150N right
250N right
100N right
50N right
How can simple machines make work easier?
by decreasing the force needed to complete the task
by increasing the friction between the machine and the object
by adding more work on the object than originally applied
by removing the force of gravity on the object
A seesaw is an example of what type of simple machine?
wheel and axle
lever
wedge
pulley
A bicycle is an example of a _________________.
simple machine
wheel
pulley
compound machine
What kind of work is made easier by the wheels of this object?
pushing a heavy load
lifting a heavy load
dividing a heavy load
holding a small load
The ______________ is an inclined plane wrapped around a cylinder or cone. It is mostly used to hold objects together.
pulley
lever
wheel and axle
screw
A group of workers needs to move a piano from the second floor of a building. The piano is too wide to fit through the doorway, so they will lower the piano to the ground through a window. Which simple machine would be the best to help the workers lower the piano from the window?
wheel and axle
inclined plane
pulley
wedge
A house uses a roof to carry away large amounts of rain efficiently. A roof composed of 2 attached inclined planes would be considered which type of simple machine?
wedge
screw
ramp
lever
Using the back of a hammer makes it much easier to remove a nail from a wooden board. What kind of simple machine would the hammer be classified as if you are using it for this purpose?
Wedge
Lever
Pullye
Inclined Plane
How many planets are in our solar system?
8
9
10
7
One of the main differences between a planet and a star is
Stars give off light
planets are more massive than stars
There are more planets in the universe than stars
what is the 4th planet in our solar system?
Jupiter
Mars
Earth
Saturn
which of these planets do not have rings?
Saturn
Uranus
Venus
Neptune
Which planet is a gas planet?
Earth
Jupiter
Mercury
Mars
The light from the moon comes from:
The moon itself
reflection from the sun
reflection from the Earth
how many phases are there of the moon?
4
6
8
10
What phase of the moon is this?
1st quarter
Full moon
New moon
3rd/last quarter
What season is it in the southern hemisphere in this photo?
Winter
Spring
Summer
Autumn
What is an eclipse?
When either the moon or the earth temporarily blocks the light from the sun
when the moon goes through its phases
When the sun temporarily goes dark
In what phase of the moon can we experience a solar eclipse?
Full Moon
New Moon
1st quarter
3rd/last quarter
In what phase of the moon can we experience a lunar eclipse?
New Moon
Full moon
1st quarter
3rd/last quarter
When referring to the moon, "waxing" means
the moon is heading towards Full Moon from New Moon
the moon heading to New Moon from Full Moon
What phase of the moon is this in the diagram?
New Moon
Full Moon
1st quarter
last quarter
on what degree is the Earth tilted?
25 degrees
23.5 degrees
21.5 degrees
24.5 degrees
The winter solstice for Australia is in June. What is the winter solstice?
It is when the Earth's axis is tilted at its maximum towards the sun. It is the longest day with the shortest night.
It is when the Earth's axis is tilted at its maximum away from the sun. It is the shortest day with the longest night.
It is the time when the planet gets exactly 12 hours of light and 12 hours of darkness
The summer solstice for Australia is in December. What is the summer solstice?
It is when the Earth's axis is tilted at its maximum towards the sun. It is the longest day with the shortest night.
It is when the Earth's axis is tilted at its maximum away from the sun. It is the shortest day with the longest night.
It is the time when the planet gets exactly 12 hours of light and 12 hours of darkness
During a solar eclipse, where will a total eclipse take place?
Everywhere on earth
Only those under the Umbra
Anyone who can see the sun
only those under the Penumbra
When the moon is in this location, what shape do we see?
Crescent
Quarter
Gibbous
Full moon
What shape of the moon will we see when it is in this location?
Crescent
Quarter
Gibbous
Full Moon
What is the shape of the moon in this photo?
Crescent
Quarter
Gibbous
Full
The largest planet in the solar system is:
Saturn
Jupiter
Uranus
Venus
what kind of tides would this alignment cause?
Spring tide
Neap tide
Which of the following descriptions best fits the tides when the moon is in this position?
The high tide will be the highest of the month, and the low tide will be the lowest.
The high tide will be average height, and the low tide will be lower than normal
The low tide will be the lowest of the month and the low tides will be the highest of the low tides
Under which light rays will the Earth be the warmest, A or B?
A
B
Who can see a lunar eclipse?
Everyone who can see the moon at the time
only the people who are under the umbra
only the people who are under the penumbra
What best describes the levels of water at a Neap tide?
The high tides are the highest of the high tides and lowest of the low tides
The high tides will be the lowest of the high tides and the low tides will be the highest of the low tides.
The high tides and the low tides will reverse
What kind of tide will there be when the moon is in this position?
Spring Tide
Neap Tide
King Tide
Storm Tide
When referring to the moon, "waning" means
the moon is heading towards Full Moon from New Moon
the moon heading to New Moon from Full Moon
When an object orbits another in space, how can their orbit best be described?
Completely circular
Elliptical (kind of like an oval)
Completely random
What best describes our solar system?
The Earth is the center of the universe and everything revolves around us.
The Sun is the center of the universe and everything in the universe orbits the sun
The Sun is the center of the solar system, and everything in the solar system orbits the sun.
How many high tides are there in a 24 hour period?
1
2
3
4
The first four planets are known as the...
Tertiary Planets
Tiny Planets
Terrestrial Planets
Extraterrestrial Planets
The last four planets in our solar system are known as...
Gas Giants
Gas Guzzlers
Planetoidal Monoliths
Mega-Planets
The moons cycle lasts:
78 days
4 days
29.5 days
32 days
What is the force that keeps planets orbiting the sun?
Magnetic
Gravity
Solar rays
If there are more hours of day light and more direct sunlight, what season is it?
Spring
Winter
Summer
Winter
If the moon falls into the Earth's shadow what is happening?
Solar Eclipse
Lunar Eclipse
An earthquake
Night time
If the moon, sun and Earth are aligned what sort of tide is created?
Spring tide
Neap tide
Lunar tide
Solar tide
How long does 1 rotation of the Earth take?
24 hours
60 minutes
6 months
1 year
Changes in Earth's seasons are mainly due to what?
Earth's revolution
Earth's rotation
Earth's orbit
Earth's tilt
Why do the Sun's rays strike different parts of the Earth at different angles?
because different parts are further away from the Sun
because the Sun's surface facing the Earth is curved
because the Earth's surface facing the Sun is curved
because the Sun's tilt changes
Besides the moon, what other body's gravitational pull has a notable effect on the tides?
Mercury
Polaris
Mars
Sun
Which tides have the highest high tides and lowest low tides?
Spring tide
Neap tide
