Which type of simple machine has a
fulcrum?
A lever has a fulcrum or pivot point.
What type of simple machine is used to
raise a flag on a flagpole?
A pulley is used to pull up the flag.
What is a hypothesis?
A hypothesis is a prediction or an educated
guess.
What is mass?
Mass is how much matter something is
made of. Something that is heavier has
more mass than something that is lighter. A
jar of rocks has more mass than a jar of
feathers.
How do you measure mass?
You use a balance to measure mass.
Volume is how much space something takes
up.
What is volume?
What is temperature?
You can measure volume in liters by using a
graduated cylinder.
Temperature is how hot or cold something is.
It can be measured using a thermometer.
How do you measure height or length?
You use a type of ruler to measure height or
length.
We measure length in centimeters or meters.
What type of simple machine has two
slanted sides and a pointed edge that could
cut into something?
A wedge is pointed and may cut into
something or push things apart.
What type of a simple machine is a
seesaw?
A seesaw is a lever.
What type of simple machine is used to
make a screw?
A screw contains an inclined plane. The
inclined plane is wrapped around a bar or
pole.
What simple machine makes a wheel chair
work?
A wheel chair uses a wheel and axle.
What types of simple machines are used in
scissors?
Scissors use two levers and a wedge to cut.
What type of simple machine do we use to
hold our classroom door open?
A wedge or an incline plane.
What is the difference between a screw and
a nail?
A screw has threads around it from the
inclined plane wrapped around it. A nail is
smooth and is a type of wedge.
What are the three states of matter?
The three states of matter are solid, liquid,
and gas.
Matter is made of tiny particles called what?
They are called atoms.
How does air fill a balloon?
Gases can expand to fill their container. If you
fill more gas into a balloon, it can make the
balloon expand.
What type of matter can change to the
shape of its container but cannot change
size?
A liquid changes shape but not is
size/volume.
What are physical properties?
Physical properties are the characteristics or
things you describe about matter. Examples
are color, shape, and size.
What changes matter from one state to
another?
A change in temperature changes the state of
matter. The more heat something has, the
more energy it has. (Think of water changing
from ice to water to water vapor.)
When heat is added, what happens to the
volume or size of matter?
It will expand or get larger.
If you have a solid (like ice), what will
happen when you add heat?
The molecules will get more energy and begin
to move more. The solid will melt into a liquid.
If you have a liquid (like water), what will
happen when you add heat to it?
The molecules will get more energy and be
able to move faster and go further apart. It will
evaporate to become a gas.
If you have a gas and it cools down, what
will happen to the gas?
The molecules will begin to slow down and
come closer together. The gas will condense
or become a liquid again.
If you have a liquid and it gets colder, what
will happen to the liquid?
The molecules in the liquid will slow down
until they cannot move around. The liquid will
freeze into a solid.
What are the parts of a plant?
A plant has roots, a stem, leaves, and fruit.
Some plants also have flowers.
A plant has roots, a stem, leaves, and fruit.
Some plants also have flowers.
The seeds are in the flower or in the fruit.
The seeds are in the flower or in the fruit.
A desert is hot with little rain.
What type of environment is cold and dry?
The Tundra is cold and dry.
What type of environment gets the most
rain?
A rainforest gets the most rain.
What do plants receive from the soil?
Plants receive nutrients, minerals, water, and
support from the soil. Carbon Dioxide and
Oxygen are not from the soil; they are
from the air.
What are the different particles of soil?
Rock, sand, silt, clay, and humus are all a
natural part of soil.
In which layer of the Earth does the grass
grow?
Grass and plants grow in the topsoil.
When you plant a bush in the soil, why do
you pat the soil around the bush?
You pat soil around the bush to provide
support.
What gives trees nutrients to grow?
The soil provides the trees with nutrients.
How is new soil formed?
Erosion breaks rocks into smaller particles
that become part of the soil.
What type of soil causes the ground to hold
water longer?
Clay causes the ground to hold water longer.
What layer of soil is on the surface?
Topsoil is on the surface and is good for
growing plants.
What is the organic matter in soil?
The organic matter is the humus.
Why is it helpful to plant grass on a hillside
of soil near a road?
The grass will prevent soil erosion to keep the
soil off of the road.
What is a cycle?
A cycle is an event that repeats in a pattern
such as the day and night cycle, phases of
the moon, changing seasons, and the water
cycle.
What cycle does the rotating of the Earth
cause?
The day and night cycle is caused by Earth’s
rotation or turning.
When the moon looks like a whole circle in
the sky, what phase is the moon?
It is a full moon.
What phase of the moon is not visible?
You cannot see the moon when it is a new
moon.
What causes the tides?
The sun and moon’s gravity causes tides.
What happens during high tide?
The water level is high and covers more of the
beach.
What cycle is caused by Earth’s revolution
around the sun?
Earth’s revolving around the sun causes the
changing seasons because of Earth’s tilt. It
takes the Earth one year to revolve around
the sun.
If a glass of water is sitting in the sun, what
will cause the water to disappear?
The water will evaporate.
The energy that drives the water cycle
comes from what source?
The energy comes from the sun.
What is the path of water between the
atmosphere and the Earth called?
It is called the water cycle.
What are the three steps of the water
cycle?
Evaporation, Condensation, and Precipitation
are the steps of the water cycle.
What could cause the water supply to
decrease?
Several months without precipitation could
cause the water supply to decrease.
What causes liquid to evaporate?
The sun causes liquid to evaporate.
What is evaporation?
Evaporation is the part of the water cycle
when water changes from a liquid to a gas.
The water vapor then rises.
What is the part of the water cycle when
moisture falls to the ground?
Precipitation is when water falls to the ground.
During what step of the water cycle are
clouds formed?
Clouds are formed during condensation.
How does watering grass in the evening
conserve water?
It allows water to go into the ground before it
evaporates.
What happens to a river if it rains too
much?
If it rains too much, rivers overflow their banks
and create a flood.
What do people build to stop flooding?
People build dams to stop flooding.
What is an example of water conservation?
One example of water conservation is cutting
the water off when you finish using it.
How can we conserve energy?
We can conserve energy by turning off our
lights when we are not using them.
What is erosion?
Erosion is the wearing away of the land.
Which of the following cannot cause water
pollution; Oil spills, sewage, sunlight, or
chemical water?
Sunlight cannot cause pollution.
What can we do to protect our
environment?
We need to conserve to help our
environment. We can also build parks to
protect plants and animals. We also need to
recycle trash so we do not waste resources
and make too much trash.
What are some natural sources of energy?
Sunlight, wind, and water are all natural forms
of energy. Fossil fuels like coal, oil, and
natural gas are also natural energy sources.
Wood is another natural energy source.
What is solar energy?
Solar energy is the heat and light from the
sun.
What is a windmill?
A windmill is turned by the wind and the
energy from the wind is used to generate
power and to create electricity.
What is a natural resource?
A natural resource is something that is found
in nature (not made by people) that we need
and use to live. Sunlight, wind, water, coal,
trees or wood, oil, and natural gas are all
natural resources.
Where can we find natural resources?
They are found all around us! Wood can be
found from trees and on the ground from
fallen branches. Sunlight and wind are found
all around. Natural gas and coal are found
underground.
What is a renewable resource?
A renewable resource is a resource that can
be replaced after it is used. Trees, sun, wind,
water, and animals are all renewable
resources.
What is a non-renewable resource?
A non-renewable resource is a resource that
cannot be replaced. When it is used up, it is
gone! Examples are coal, oil, and minerals.