Problemas no layout

Oi pessoal, fui acompanhando o curso e seguindo os passos do instrutor. Na hora que defini o ScrollView o meu campo "Nome" nao aparece no modo retrato e nem no modo paisagem. O meu codigo esta da seguinte forma:

<?xml version="1.0" encoding="utf-8"?>

<ScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <EditText android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Nome" />

        <EditText android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Endereco" />

        <EditText android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Telefone" />

        <EditText android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Site" />

        <RatingBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:max="10"
            android:numStars="5"/>

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Salvar"/>
    </LinearLayout>

</ScrollView>

Obs: Ja removi o ScrollView e memso assim o layout nao mostra o cmapo nome :/